How to fix cummins fault code 6432. It is better to leave the job to the professionals.

How to fix cummins fault code 6432 We are going to Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 6432 PID: SPN: 641 FMI: 14 VGT Actuator Controller- Special Instructions Circuit Description The variable geometry turbocharger (VGT) is electronically activated by the VGT actuator. 3 CM2150 » SPN 91 - FMI 2 (Fault Code 1242) SPN 91 - FMI 2 (Fault Code 1242) Blog. Shop Talk This fault code can only be logged after the VGT actuator has been removed or replaced, and then not installed correctly. Can Cummins Fault Code Spn 3058 Home » Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3. I didn't clean the EGR cooler. A well-structured diagnostic process is crucial if you want a successful repair. How to solve Cummins Insite 8. I will check out Home » Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3. But experts handling this problem are the best solution. You should be able to click on each code individually or remove them all at once with an “erase all faults” option. It’s important to have this code diagnosed and repaired as soon as I hope our discussion today gave you all of the knowledge you needed. Vin 239932. Thanks for the GREAT information Rob! It was FMI 12 and the Check Engine Light was Yellow. To learn more about this fault code and what to do about it, just continue to read our article. Additionally, it is advisable to clear the fault code using appropriate diagnostic tools. 3 CM2150 » SPN 641 - FMI 7 (Fault Code 2387) SPN 641 - FMI 7 (Fault Code 2387) Blog. While there is a proper procedure for reading all of the fault codes that can initiate a shutdown of the power generator set, §Having an actuator fault code does not all ways mean the actuator or turbo is bad •Combination of the fault code and the time it triggered is important for proper diagnosis •Remember there are other components upstream and downstream affecting the operation of the turbocharger Cummins Internal Use Only. The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications. Fault code 3389. It was all over when it comes to the P2121 code on a Dodge Cummins. Read Also: What Is P1689 Code On Dodge Cummins? (How to Fix It) This message is subsequently decoded and converted to a fault code by the ECM. The ECM logs the fault code immediately when the diagnostic runs and fails. Additionally, with problems in the ECM, your Cummins engine might not be able 88 = Individual Fault Index. I have replaced the actuator and check for air pressure. This medium duty engine from Cummins meet the 2014 greenhouse gas (GHG) and full efficiency regulations a year ahead of schedule, and it very popular today. At that time, you have to research the technical service bulletin of your Cummins vehicle. How Serious Is Code P0607 Code On Cummins? This is a severe code because it controls the entire ECM of the vehicle. facebook. The gear alignment between the actuator and the Once into Quickserve click on the Service Tab, then Fault Code Search, then Engine Fault Code tab and enter the Cummins fault (2634). Check out the latest mechanic jobs http 83 – Specific Fault Index ( Cooling fan rationality malfunction) How much does it cost to fix Cummins P0483 code? Given that some of the fixes you can pull off by yourself and some fixes that need expert consultation, there will be both Home / DTC TRUCKS / Cumminz / ISB4. Keep an eye on the code and try to fix it as quickly as possible. To find which one, you need to press the STOP/PRIME button and hold it After the maintenance reminder, I got the P0489 code (EGR control circuit low) off and on during that period. Troubleshooting fault code 1446. MHH AUTO. These definitions should help you understand what is going on when you see the fault code illuminated on your screens. While the manual shutoff valve is in the open position, there is a chance that due to the faulty solenoid or wiring it is actually closed. SPN641 FMI13. You can think of them as warning signs—like a yellow light on your dashboard—that Learn how to clear Cummins fault codes without a scan tool in this comprehensive step-by-step guide. Keep reading to find out how to troubleshoot Cummins Fault Code 3582! Skip to content . Because When it throws at you the fault code 1433, if you are not fully aware of what this code means, you may be alarmed. Usually happens during very light acceleration, or while at idle. What does code 1117 mean? When this code appears, it indicates a disruption in the battery supply while the ignition was in the “on” position. Cummins. Each sensor is connected to a circuit made of 3 parts: the ECM, Wires (cable harness) and the Sensor itself. When the fuel filters become clogged, it can restrict the flow of fuel to the engine, leading to issues with performance and triggering fault codes. The VGT actuator is a smart device and receives information via the J1939 data link from the primary engine control module (ECM). The sector gear/shaft needs to be rotated fully clockwise. Step #2 Reset the emergency stop button and Diagnostic Fault Codes For Cummins Engines Applies to Engine Models QSB T2, QSC T2, QSL T2, QSM11, QSX15, QSK19, QSK23, QST30, QSK45/60/78 Note: These fault codes are current at date of publication. Even a slight malfunction in the ECM can cause massive changes to your vehicle’s performance. For this specific code, it means High Pressure of Fuel Rail System; How Serious Is P0088 Code On Dodge Cummins? As the code numbers suggest, the P0088 code isn’t a very common OBD-II code to come up on your Dodge. Get 5% Off for Your First Order—— Cummins isx fault code 4156,1881,3712,3714 74120718 - ECM Code - HB80005. Any This fault code can only be logged after the VGT actuator has been removed or replaced, and then not installed correctly. - The VP44 fuel pump is located on the 2018 kenworth with cummins. If any issues are found, they should be repaired or replaced accordingly. Take into account all of my This means the fault is associated with one of the circuits. Expert. 7 Cummins. Keep an eye on the code and attempt to fix it as soon as possible. Here are some steps that should be taken: Cummins Tier 4 Fault Codes Fault Code J1939 SPN J1939 FMI Lamp J1939 SPN Description Cummins Description QSB 6. 28 2NP3L0X9JM466045 Codes 6339 0285 1897 6432 Im locked out of my quickserve account I. The gear alignment between the actuator and the turbocharger housing is misaligned. Contact your local Cummins dealer for more A problematic cluster module also causes the U1421 code on Cummins. Skip to the content . For this purpose, you have to move through a step-by-step process. Cummins generators come equipped with various generations and versions of the PowerCommand control units depending on the exact model of the generator. Multiple scans with a specialized scan instrument, as well as another testing, may be required to ensure that the right plan of action is adopted. SPN91 FMI2 (Accelerator Pedal or Lever Position Sensor 1 and 2 - Data Erratic, Intermittent, or Incorrect) Home » Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3. 137 posts · Joined 2016 Add to quote; Only show this user #3 · Aug 20, 2019. You can think of them as warning signs—like a yellow light on your dashboard—that Bs4 vehical pick-up problem Uria consumption fully stopped and vehical pick-up was dope so we onnected the laptop and checked the all fault code and done ne Actuator/Turbo Fault Codes (P003A, P00AF, U010C) But I would sell the whole thing for cheaper than your dealership would quote you on their cheapest fix i assure you that. One common cause of fault codes is dirty or clogged fuel filters. pdf), Text File (. When an OBD-II fault code, including the P003A code, register with the ECM, establishing the reason for the issue and deciding what repairs are required might take several hours. Troubleshooting fault code 1246. 5 QSF 3. Bud. At this point the Check engine, or warning light will be illuminated, and the ECM will no longer attempt to Actuate the VGT and will also no longer perform EGR Valve actuations. Consider all of my suggestions and, if required, seek professional help. To avoid these problems, it is essential to adhere to the right order when diagnosing P2262 codes. Thursday, October 25, 2018 Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3. The consequences of missing a step could result in misdiagnosis and further issues. Either it is the mechanic cost or its parts cost. 2019 Kenworth T880. Explore the limitations of this approach and understand the advantages of using dedicated tools. My Orders My Tickets My Reviews VIP Special Products My my whatsapp number for technical support+919839787404you also connect with me by my facebook group electro mechanical engineeringhttps://www. SPN 641 FMI 7. 22,012 Satisfied Customers. In some cases, it may just cause your engine to run rough. Our technical support services have successfully helped ma There has NOT been turbo bearing issues on any 6. Nich M. If not you can go old school. It’s the actuator and or moving parts that moves the sliding collar over the fixed vanes that has had the issues. How When the P2228 is running, steps should be taken urgently for the sake of your 6. We may look at the “Freeze Frame” data How To Clear Cummins Fault Codes. Connect a code reader tool to your ECM and navigate to the “fault codes” tab. When a secondary powertrain module fails, the ECM shows false data, and hence the truck fails to deliver the expected performance. 3. If these fault codes are active, this means the engine performance is already reduced (power derate) and possibly the vehicle speed is also limited. 52 – Fault Index ( Sensor Reference Voltage ‘B’ Circuit low) Here are the steps you need to follow to fix the P0652 code on your Cummins engine: Step-1: Scan and Verify If you diagnose the fault in your PCM, it needs to be fixed soon. Cummins ISX CM 871 ECM is known for having issues with code 1117. Read also: How To Fix Fault Code 1433 On Cummins Generator. Teknisi . To do this, you’ll need a diagnostic tool and software. The LCD screen of your Cummins generator will then display the three-line message: ISB engine code 2636 see the full write up here https://www. It was over when it comes to the P1689 code on a Dodge Cummins. 5 CM2150 / Cummins ISB4. 02= Specific Fault Index (In this case, it refers to when particulate filter efficiency below threshold has been detected) How Serious Is Code P2002 On Cummins? This DTC code is referred to as a “soft code. I cleaned the EGR valve and replaced the crankcase ventilation filter. The leaks often happen in the throttle body when you use This is a fault code 3, which means that the generator has stopped because of some double-digit fault code. 2018 auto car, acx, isl9. Let me know man . 197K miles. Always refer to engine service manual for the latest information related to engine diagnostics and troubleshooting. I think it's all Onan fault code 32 is a low cranking speed. You can see that by looking over the tables below. 7 Cummins model years. mechanicshub. Discover an alternative method for temporary fault code clearance when professional tools are unavailable. 1 Connection Errors 5204 5202 5201 5200 by obdii365. Fix the leak in the throttle body . Take into account all of my suggestions and, if 89 = Specific fault index (In our case, this denotes low fluid pressure) There is a chain of command between different components inside Cummins. This fault is set when the ECM does not detect any messages from the VGT Actuator for 1 second. • The fault code status displayed by the recommended Cummins electronic service tool or equivalent will change to INACTIVE immediately after the diagnostic runs and passes. 07 = This is the specific fault index (in this case, it involves the issues with ECM). You’ll incur the mechanic fee when you don’t opt for fixing the code by yourself. ” As such, it is not a serious code I've been getting a "Fuel Rail Pressure Too High" fault code every once and a while. Training courses; Aftertreatment 09= Particular fault index (In this case, it sets off a problem with the intake air system performance) How To Fix P2609 Code On Cummins? The P2609 code can be caused by multiple problems, and here are the ways to fix them so that the code doesn’t trigger in your vehicle: Replace or flash the PCM; If your Cummins engine is displaying the P2609 code, About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Can I fix Cummins fault codes myself? For simple issues, you can attempt DIY solutions like checking sensor connections or cleaning components. com/toolbox/cummins-code-2636-vgt-actuator/. P003A is the code that results from decrypting the message. Variable Geometry Turbocharger (VGT) Actuator Driver Circuit (Motor) - We first found a fault code of 1894 that is a VGT Actuator Circuit Abnormal Update Rate fault. Has happened about 4 times now over 3 months. 8 QSG12 111 629 12 Red Controller #1 Engine Control Module Critical Internal Failure - Bad intelligent device or component XXXXXX 115 612 2 Red System Diagnostic Code #2 Engine Magnetic Speed/Position Lost If you own a Cummins engine, you may have encountered fault codes—those perplexing messages that appear on your dashboard. It Once into Quickserve click on the Service Tab, then Fault Code Search, then Engine Fault Code tab and enter the Cummins fault (2634). Looking for Paccar EPA17 service manuals for 16 = Specific fault index (In our case, this denotes injection pump timing sensor circuit) How Serious Is P0216 Code on Dodge Cummins? The severity level of P0216 can vary. However, if you need to replace the coolant temperature sensor, it will cost you around $50 Conditions for Clearing the Fault Code: • To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute. Reference #1. Reading the Fault Code on Cummins Generator. Both are information-only fault codes which appear when the ECM detects active critical fault codes related to engine operation. 22 VG Actuator Common Failure Modes §Communication fault If you own a Cummins engine, you may have encountered fault codes—those perplexing messages that appear on your dashboard. How free should the sector shaft move. Conditions for Clearing the Fault Code To validate the repair, perform a key cycle, start the engine, and let it idle for 1 minute. VGT Actuator Controller - Out of Calibration. 3 or 3. The exact problem will be signaled by that particular fault code, for which you can find information on how to fix it on other pages of this blog. I removed the filter and Download and support for the digital fault code troubleshooting manual, includes fault codes, procedure numbers and step by step troubleshooting guidance. Check for blockages in the exhaust system and ensure all wiring connections are intact. All types of Cummins applications. But if it does, it should not be ignored or neglected. Has only happened when running the factory calibration, but then I only use the race box tunes very rarely. Mechanic's Assistant: Have you seen this error before with the same vehicle? Customer: Nope. But never be worried. How Serious Is P003A Code On Cummins? The severity of P003A can be moderately high. To protect the engine, the ECM activates the power derate. Very common for both of them to be stuck, but sometimes its just one thing 87= Specific fault index (In our case, this represents fuel system pressure too low ) How To Fix P0087 Code On Cummins? After noticing the code p0087 on your dodge cummins, you must immediately decide to fix the issue. The VGT actuator is a smart device and receives information via the J1939 data link from the primary engine Read also: How To Fix Fault Code 1689 On Cummins Generator. 3 CM2150 » SPN 641 - FMI 13 (Fault Code 2449) SPN 641 - FMI 13 (Fault Code 2449) Blog. After doing 17= Specific fault index ( the engine is overheating and needs to shut off) How Much Does It Cost to Fix the Cummins P0217 Code? There is not a single amount to fix the Cummins P0217 code. You can use Diesel Read also: How To Fix Fault Code 1446 On Cummins Generator. 3 control unit. Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 2692 PID: SPN: 3936 FMI: 2 Aftertreatment 1 Diesel Particulate Filter System- Data Erratic, Intermittent, or Incorrect Circuit Description The aftertreatment particulate matter sensor is a smart device and communicates with the engine control module (ECM) via the J1939 data link. The dealer is going to quote you $4K to replace Cummins Fault codes 3712 and 3714. It means that the local emergency stop signal was Read also: How To Fix Fault Code 359 On Cummins Generator. Fault Code 374 - Free download as PDF File (. ISB, ISC, and ISL - VGT Actuator Circuit : I hope our conversation today gave you all of the information you needed. Here’s a complete breakdown of the costs that might be associated with fixing the Cummins P0148 code: To diagnose and fix Cummins fault code SPN 3058 FMI 16, it is recommended to perform a thorough inspection of the exhaust gas temperature sensor and its wiring connections. Possible Causes-Open return in the harness, connectors, or sensor-SIGNAL wire shorted to sensor supply -Malfunctioning intake throttle actuator position sensor The ECM will also take a “Snap Shot” of all other sensor readings or data parameters at the time the fault occurred and save it as a “Freeze Frame” in addition to recording the fault code. To find which one, you need to press the STOP/PRIME button and hold it for about a second. Replace the sensor if needed. 3 CM2150. When a fault is detected by the engine control module (ECM), it stores the corresponding fault code in its memory. I went to the Kenworth delear bought the new vgt actuator and the thing is I was told they will not return my money if I open the VGT actuator box, so now after I tried to replace the Read also: How To Fix Fault Code 1447 On Cummins Generator. No single solution is available for this issue. cumminsdr. SPN641 FMI7. Checking the solenoid whether it is opening or closing requires some skills and knowledge of Before you can try to fix the fault code 1434, you need to make sure that it is the situation you have found yourself in. Once you’ve made the necessary engine repairs you can clear the fault codes. The only error I've ever seen was the soot load error about a year ago. However, for complex problems, it’s best to consult a certified technician. Saturday, July 14, 2018 Fault Codes CUMMINS GTA38 K38 K50 QSK38 QSK50/60 CM850, Fault Codes CUMMINS Signature ISX QSX15 CM570. The crankcase breather heater will be disabled. I have a Cummins isx coding 3225 purge air actuator. Customer: Yes Mechanic's Assistant:Is there anything else the expert should First introduced in 2013, the CM2350 uses all previous emission technology from 2007 to current, and improves upon it. By default, this threshold is 110% of the nominal voltage of the generator, but this can be one of the potential Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 6432 PID: SPN: 641 FMI: 14 VGT Actuator Controller- Special Instructions Circuit Description The variable geometry turbocharger (VGT) is electronically activated by the VGT actuator. The fault code 1246 means that the generator has shut down due to some unspecified engine fault. com engineers. Cummins Tier 4 Fault Codes Read also: How To Fix Fault Code 1246 On Cummins Generator. Save Share Reply Quote Like. I have a 2020 kenworth box truck. The soot load of the Diesel Particulate Filter is monitored by the DPF differential pressure sensor. Reference #2. It has the How to Diagnose and Fix Code 1117 on Cummins ISX CM 871. The correct installation Yes, troubleshoot 6432 first. txt) or read online for free. If you are staying emissions intacked then the VGT is required. In simple terms, fault codes are alerts generated by your engine's onboard computer to After all that, Cummins only uses one code number which relates to the SPN and FMI portion of this code system. Cummins told me that that the Engine VGT Actuator #1 was a total part failure and needed to be replaced. When the fault code 1446 happens to your generator it means that the current on one or more phases went above the High AC Voltage threshold for longer than 10 seconds. What causes Fault Code 1845 on Cummins generators? Fault Code 1845 is caused by issues with the How Much Does It Cost To Fix Cummins P0148 Code? The cost of fixing the Cummins P0148 code is two types. Cummins Fault Codes Explained. 6,041 Satisfied Customers. And with the code running actively, you should avoid running your engine to resist Cummins fault code 1922 becomes active when the soot load of the Diesel Particulate Filter (DPF) has exceeded the recommended limits. The Cummins has been a real diesel forever. ” To read the two-digit fault code, you need to long-press the STOP/PRIME button once, hold it pressed Cummins engine fault codes can be caused by a variety of issues, but some are more common than others. It is better to leave the job to the professionals. 7 Cummins can be costly and inconvenient. In that case it's likely a faulty actuator. Unless you properly diagnose a problem, you can’t really hope to solve it successfully. What that means is that the RPM level while starting was under 180 for at least 2 seconds. Wednesday, June 21, 2017 Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3. In simple terms, fault codes are alerts generated by your engine's onboard computer to signal that something isn’t functioning as it should. Causes of the Fault Code 359 You Can’t Fix FSO valve solenoid or circuit is malfunctioning. The document provides troubleshooting steps for fault code 374 related to the VP44 fuel pump on a Cummins engine. The sensor is located on the Aftertreatment system, mounted cummins bs6 dp pressure sensor problem solve | fault code 3134 solve | differential pressure sensor | majoka auto tech | ajay majokaRespected Viewer,In this How can I fix Fault Code 2972 on my Cummins generator? To fix Fault Code 2972, inspect the exhaust gas pressure sensor for any signs of damage. MHH AUTO Home » Fault Codes CUMMINS GTA38 K38 K50 QSK38 QSK50/60 CM850 » Fault Codes CUMMINS Signature ISX QSX15 CM570 » SPN 632 - FMI 7 (Fault Code 259) SPN 632 - FMI 7 (Fault Code 259) Blog. The gear alignment between the actuator and the •Fault codes 1894, 2387, 1897, 6432, 5177, 2198, 1976, 1938, 2635, 4956, 4957 Root Cause: •Prolonged condensate drips from the overhead air conditioning condenser line causes the This fault code can only be logged after the VGT actuator has been removed or replaced, and then not installed correctly. 41= Specific fault index. The fault code 1433, like all four-digit fault codes, is a specific characteristic of Cummins backup generators that are equipped with the PowerCommand 2. Sign in or Register; WhatsApp:+86 18350207975; My Account. Have code 6432 fmi 7 can you please send instructions By chatting and providing personal info Getting a fault code, 578 Voltage Above Normal (FMI: 3) Drive Axle Temperature. 28 = Specific fault sign (In this case, the control circuit opens up) How To Fix P0628 Code On Cummins? We should warn you that fixing the P0628 Code is quite difficult. Their purpose is to give the operator as much control of the generator as possible, but also to Customer: Cummins L9 ESN #74530231 Mechanic's Assistant:What specific issue or problem are you experiencing with your Cummins L9 engine? Customer: Fault code #6432 Mechanic's Assistant:Have you performed any troubleshooting or diagnostic steps so far? If yes, please provide details. 7 VGT Turbo Actuator So, how to fix fault code 427 on Cummins generator? To solve the fault code 427 on Cummins generator, just check and follow the steps below: Step #1 Check the emergency stop button. Otherwise, the fault may actively mess up air/ fuel ratios. How To Fix Cummins U1421 Code? Fixing the U1421 code on Cummins is not child’s play. 5 CM2150 Fault Code: 3539 PID: SPN: 51 FMI: 3 -This fault code and MIL can also be cleared with INSITE™ electronic service tool. Eventually How To Fix Fault code 1898 for Cummins ISB 6. 21,602 Satisfied Customers. Home; Categories. The meaning is as follows- “Engine Injector Metering Rail 1 Cranking Pressure Data Valid But Below Normal Operating Range” This does not seem to be connected to a mechanical, electrical, or even a fluid problem. It boasts horsepower ratings from 200 to 325 HP, and Another video just showing you how to check for your turbo or actuator being bad. These fault codes can help you identify the issue and take appropriate action to resolve it. So I asked around after I checked the fault codes (1 was about vgt actuator not communicationg with ecm, you can see in the attached picture) and was told I need to change the vgt actuator. Another common cause is issues with the injectors or Failure to follow the core problem in the code diagnostic process forP2262 code 6. star_deceiver. Teknisi. Depending on which tool you use to retrieve fault codes from your Cummins engine, you may either see the generic SPN & FMI codes or the actual Cummins OEM fault code. The fault code status displayed by INSITE? electronic service tool will change to INACTIVE This is an explanation on what it takes to clear fault codes 3712 and 3714 on Cummins powertrains. It’s a very complex and sensitive problem. Cummins QSB6,7 Fault Code: 1844 Fault Description: Crankcase Pressure Circuit – Voltage Below Normal or Shorted to Low Source (Note the word Circuit!) ALWAYS approach the fault as a circuit problem, rather than a sensor problem. . However, it can cause the engine to stall or fail to start in other cases. Key points include: - Fault code 374 indicates a potential issue with the VP44 fuel pump that could trigger the check engine light. (In our case, this indicates the air intake heater relay goes to a lower voltage) How To Fix P0541 Code On Cummins? Whenever you notice the code p0541 on your Cummins vehicles, you have to decide to fix the exact issue with your vehicle immediately. You may be surprised at the sources for this fault code as one is you need to change the oil. When you press the Emergency Stop button, the shutdown indicator should light up with a red LED, while the warning indicator should light up with an amber. Codes 3389, 3361 . Nonetheless, the fixing cost will depend on the types of reasons that caused the code. The actuator was never removed so what coaused this code. For this specific I hope our discussion today gave you all of the knowledge you needed. It was over when it comes to the P1193 code on a Dodge Cummins. com/gro Cummins fault codes are diagnostic codes that indicate a problem with the engine or any of its components. The better strategy before going for a fix is to reset it and clear all the codes. Found wires on vgt. 7 QSL 9 QSX 15 QSB 4. How Serious Is P1689 Code On Cummins? If your Cummins shows a P1689 diagnostic trouble Fix Cummins Fault Code 3582! If NOx conversion across the Cummins SCR catalyst is too low, Fault Code 3582 will become active. However, checking out the probable cause yourself might solve the U1421 code. This often results in the truck shutting down and refusing to restart. I was clear of codes for a little while but I'm currently getting the followings codes and it's off and on as before. If you own a Cummins engine, you may have encountered fault codes—those perplexing messages that appear on your dashboard. But if you’ve “This is not the fault code 33, but the fault code 3 which means that your generator has stoped due to some two-digit fault code. yqchoj gzt lpjdbl fapjntr vhrgy nprxb onx yweons bvqgp emlq