P0746

OBD II fault code P0868 is a generic code that is defined as "Transmission fluid pressure (TFP) sensor -low", and is set when the PCM (Powertrain Control Module) detects that the transmission fluid pressure is lower than the minimum allowable value. All automatic transmissions use pressurized transmission fluid to engage/disengage clutch ...

I have the following codes from my 2007 Nissan Murano after diagnosing with Launch X431 The codes are P0725, P0746, P0868, P1722, & P1778. Please give code interpretaion and service guide … read moreThe P0746 Nissan code means that the pressure control solenoid 'A' is malfunctioned and needs to be replaced. It can cause engine light on, transmission shift shock, and other symptoms. The web page explains the possible causes, tech notes, cost to diagnose, and how to fix the code.The trouble codes related to the "A" solenoid are codes P0745, P0746, P0747, P0748 and P0749. The code set is based on the specific malfunction that alerts the PCM and illuminates the Check Engine Light. The purpose of the Transmission Pressure Control Solenoids is to control the pressure of the fluid for the proper operation of an automatic ...2008 Nissan Altima. Asked by ashy32382 in New London, CT on June 12, 2013. My car is showing code p0746, I had the transmission flushed and all new fluid yesterday, but check engine light is still on. Nissan told me I needed a whole new transmission, the car has 130k miles so its over warranty, but a mechanic told me I should just be able to ...Labor: 1.0. The cost to diagnose the P0746 Acura code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.17130 - Pressure Control Solenoid 1 - P0746 - 012 - Implausible Signal or Stuck Off - Intermittent a) what DSG model/size/ID is installed in my car? b) on 'tradional' transmission with similar code, the 'valve body' can be replaced with a refurbished one. Not sure if DSG trannies have such a thing? c) Suggestions to trouble shoot the issue.I get codes for a Pressure control solenoid (P0746) and Transmission Reverse I/P circuit. Vehicle has been stuck in limp mode since an hour after I bought th...

After installation car ran fine for few miles then bam!! received a P0746 & P0797 code. Entire trans was dropped again and they found small leak on clutch basket, repaired the seal with viton seal to include both input and output shaft seals. After the shop put everything back together and they clear the codes, the codes keep coming back up ...Code P0746 2009 Toyota Camry Description. The Pressure Control (PC) Solenoid Valve is an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. As current flow is increased, the magnetic field produced by the coil moves the solenoid’s plunger further away from the exhaust port.Jan 28, 2024 · Code P0746 Nissan refers to a specific diagnostic trouble code that indicates a malfunction in the pressure control solenoid valve within the transmission. This code specifically points towards a problem with the Pressure Control Solenoid “A” Performance/Stuck Off. When this code appears, it means that the computer system in your Nissan has ... P0746: Pressure Control Solenoid "A" Performance or Stuck Off Before heading over to the dealership, I was wondering if anyone could tell me more about this issue. I don't have any check engine type lights on and haven't noticed any issues while driving. Thanks in advance for any information.Se debe de tener en cuenta que el código de diagnóstico OBD2 P0746 es un código genérico, por lo que este código DTC puede ser provocado en cualquier automóvil independientemente de que sea un vehículo de la marca Toyota o de cualquier otra marca.To diagnose the P0776 Nissan code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.Here is what I got from the web when I googled for more info about this code for Honda: P0746 - Clutch Pressure Control Solenoid Valve A Stuck Off. Symptoms: - Engine Light ON (or Service Engine Soon Warning Light) - Transmission shift shock. Possible causes: - Faulty line pressure solenoid valve. - Line pressure solenoid valve harness or ...The automobile fault code P0744 indicates a problem with the Torque Converter Clutch (TCC) Solenoid Valve. Symptoms may include erratic shifting, transmission slipping, or the transmission not engaging properly. The code is often caused by low transmission fluid level, dirty transmission fluid, a faulty TCC solenoid valve, or issues with the ...

Native Hawaiian and Pacific Islander families in the United States have endured mental health challenges. Here's why and how to support well-being. Asian Pacific Islanders are a di...Right! It's the 2012 4x4 automatic After it failed - codes upon revving were P0727 and P0746. Pending and permanent. This one has 129,300 miles. I'm told by primary driver (oldest daughter)it had been acting strange. I only get the kids' cars after things require tow trucks.MIL ON with DTC P0746, P0776, P0841, and/or P0965 stored. NOTE: The vehicle may hesitate and/or have reduced power. Replace the CVT assembly. See page 17 for important pre-authorization information. The CVT belt checks out OK. Remove the control valve and inspect the CVT belt. Evidence of CVT belt slippage. Replace the control valve.Aug 17, 2021 · Trouble code P0746. 2014 Murano losing power when accelerating. Floor the gas and i barely move and the rpms do not increase. keep it floored eventually the speed increases and then drives up to about 40 MPH. As long as I do not tap break when slowing down or come to complete stop the it will engage otherwise now coasts (limp mode I assume ...

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SB 2005 Murano; No Movement in "D" or "R" and DTCs P0746/P0720 Stored SB 2003-2004 Murano; Lack Of Power On Take Off With DTC P0868 Stored In The BF - BODY & FRAME SB Removal Of Paint Guard Film Adhesive Residue BR - BRAKE SYSTEM SB Nissan; Brake Noise/Judder/Pedal Feel Diagnosis And Repair SB 2003-2004 Murano; Rattle From Rear When Going Over ...Install the manual plate, lock washer, and nut (Figure 171). HINT: Make sure the manual plate fits into the slot of the manual valve before applying torque to the nut. Reuse the existing manual plate, lock washer, and nut. 126. Clean the original oil pan and magnets with a suitable cleaner.The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the Transmission Control Module (TCM). The Diagnostic Trouble Code (DTC) will be set when the gear required by the Engine Control Module ( ECM) does not match the actual gear when driving. P0746 2006 Toyota ...Nissan has issued a service bulletin #NTB17-034h to address a transmission judder (shake, shudder, single or multiple bumps or vibration), hesitation on acceleration, lack of power or RPM flare, along with P0846 Code and/or P0746 or P0965 on the vehicles listed below.

The video focuses on the basic Mitsubishi specific diagnostic error code.Contents:0:21 Basic DTC analysis according to OBD2 protocol standard.1:48 Insight in...TRANSMISSION SOLENOID REPLACEMENT LOCATION JEEP COMPASS JEEP PATRIOT DODGE DARTIf you have Kia and you need to replace the transmission solenoid on Dodge Jee...12345123456Now to get to the solenoid and the valve body you have to remove trans pan and go inside its right there once you remove panBut what I sent is solenoid removal and testing procedure. Ask Your Own Lexus Question. Lexus Mechanic: AnthonyR. If you need anything else please feel free to reach out.Re: P0746 Pressure Control Solenoid Performance or Stuck Off (ffmpr604) Post by BBISHOPPCM » Sun Jan 18, 2009 7:17 am. My suggestion is to remove the hydrogen generator and take it into the dealer. There is a chance your "equipment" may have caused this, actually, a pretty good one (CVT transmissions do not like sudden changes in engine output ...A very common condition in the U.S., sleep apnea is a serious sleep disorder that interferes with the breathing while people are asleep. According to the National Sleep Foundation,...HumanQ is a structured marketplace, meaning that employers pay coaches after they support customers. Nishika de Rosairo, the founder and chief executive of HumanQ, has a vision for...Transmission faulty, transmission code: P0740E torque converter clutch actuator stuck ON, P27137F pressure control solenoid "D" actuator stuck OFF, and P2756...Symptoms of a P0746 include: Check engine light. Harsh, delayed or erratic shifts. Slipping in-and-out of gear. Engine stalls. Getting stuck in gear. Vehicle won’t …What Does the P0746 Infiniti Code Mean? The Pressure Control (PC) Solenoid Valve is an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. As current flow is increased, the magnetic field produced by the coil moves the solenoid’s plunger further away from the exhaust port.Nissan TSB NTB19-075. The customer reports a transmission judder (shake, shudder, single or multiple bumps or vibration), hesitation on acceleration, lack of power or RPM flare. One or more of the following DTC (s) may be stored: P0746, P0846, P0868, P0965, P17F0, P17F1, P17F2, P17F3, P17F4, P2857, P2858, P2859, P285A.

P0746 is an OBD-II diagnostic code that indicates a problem with the transmission system's pressure control solenoid. It can cause drivability issues, check engine light, and gearshift problems. Learn the symptoms, causes, and solutions for this code from KBB Service Advisor.

The P0746 and P0747 codes indicate transmission problems resulting from varying causes, including: Contaminated or dirty transmission fluid. Low levels of transmission fluid. A clogged ...The automobile fault code P0776 indicates a problem with the line pressure solenoid ‘B’ valve in the transmission system. Symptoms may include erratic shifting, slipping gears, or a complete failure to engage. The most common causes are low transmission fluid level, dirty transmission fluid, a faulty solenoid valve, or issues with the ...I think, I was at 3/4 to WOT on a downshift 5-4. The code was P0746 (Pressure control solenoid preformance stuck off) So my question is how concernd should I be? The trans is stock for now, and I don't normally drive this hard at all. PPE tune is at level 1 (+60hp).What Does the P0746 Infiniti Code Mean? The Pressure Control (PC) Solenoid Valve is an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. As current flow is increased, the magnetic field produced by the coil moves the solenoid's plunger further away from the exhaust port.P0746 (PRES CNT SOL/A FCTN (L/PRESS SOL/FNCTN)) P0965 (PRESSURE CONTROL SOLENOID B) ACTION Refer to the Repair Overview on page 2. CAUTION: Always handle the CVT and component assemblies carefully. IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you will be performing.Limpia o reemplaza el solenoide de control de presión: Si el solenoide está obstruido o defectuoso, puede causar problemas con el código de falla P0746. Intenta limpiarlo con un limpiador de circuitos electrónicos y verifica si se soluciona el problema. Si el solenoide está dañado, es recomendable reemplazarlo.The P0777 code stands for "Pressure Control Solenoid "B" Stuck On.". The code is logged once the pressure control solenoid "B" is stuck in the on position. Aside from a faulty pressure control solenoid, dirty transmission fluid, a clogged transmission fluid filter, a faulty transmission pump, a malfunctioning transmission valve body ...P0746: PRESSURE CONTROL SOLENOID A (Pressure Control Solenoid A Performance/Stuck Off) The detecting condition A or detection condition B is detected twice or more (1 second or more later after detection of the first) in the same DC under the following diagnosis conditions: Diagnosis conditions ...DSG P0746 and P0776 Codes. Looking for transmission fuses... Please help. Tags dsg dsg code passat transmission fuses. Jump to Latest Follow 20K views 6 replies 4 participants last post by hichamaziz Feb 23, 2018. V N Discussion starter 3 posts · Joined 2018 ...

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Want to correct the Trouble Code P0746? Read these points mentioned below: The defective pump will have to either be repaired or replaced; Adjust the transmission fluid level to the right one; Replace all the contaminated transmission fluid properly; The faulty line pressure solenoid valve will need replacementP0746. Definition: Line Pressure Solenoid System (Drive current range out) (CVT) Description: Transmission range switch position: D. Throttle position sensor voltage: 1.37 volts or more. Engine speed: 450 r/min or more. Transmission fluid temperature: 20°C (68°F) or more. Transmission fluid temperature: 180°C (356°F) or less.P0746: PRESSURE CONTROL SOLENOID A (Pressure Control Solenoid A Performance/Stuck Off) The detecting condition A or detection condition B is detected twice or more (1 second or more later after detection of the first) in the same DC under the following diagnosis conditions: Diagnosis conditions ...The input/turbine speed sensor / turbine speed sensor / TSS is an electromagnetic sensor that relays the speed / RPM of the transmission input shaft to the ECU, through a voltage pattern. Having a P0716 OBD2 Diagnostic Trouble Code (DTC) means that the ECU has detected a problem with the input / turbine speed sensor, which will likely prevent ...The two codes are listed in picture for causes, but 178 is the step motor which means it works okay electrically, but mechanically there is something wrong. It is kind of hard to believe that Nissan would charge more than what you paid for the car unless the person selling it knew of a problem and dumped.Title: Probation Officer: P&P District #07/Petersburg #P0746, #P0741 State Role Title: Probation Officer I Hiring Range: $45,518 - $50,337 Pay Band: 4 Agency: Dept of Corr - Central Admin Location: Petersburg P&P Agency Website: www.vadoc.virginia.gov Recruitment Type: General Public - G Job Duties Position contributes to the agency's public safety mission by providing supervision ...P0717 is a somewhat rare OBD2 trouble code that can occur in the Jeep Patriot. While it illuminates the check engine light, the code warns of a transmission-related error, specifically that the input shaft/turbine speed sensor is not sending a signal. P0717 is a generic code (it has the same meaning for any vehicle made.P0746: PC SOLENOID A (Pressure Control Solenoid A Performance/ Stuck Off) The detecting condition A or detection condition B is detected twice or more (1 second or more later after detection of the first) in the same DC under the following diagnosis conditions: Diagnosis conditions; Engine speed: More than 600 rpm=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====nonda Auto DIY Center is the biggest ...Summary. Diagnostic trouble code (DTC) P2714 stands for "Pressure Control Solenoid 'D' Performance/Stuck Off.". On-board diagnostics (OBD) typically logs this code when the powertrain control module (PCM) detects an issue with pressure control solenoid "D.". If this code is set, your vehicle can exhibit symptoms like harsh/soft ... ….

Semen analysis measures the amount and quality of a man's semen and sperm. Semen is the thick, white fluid released during ejaculation that contains sperm. Semen analysis measures ...Jun 22, 2023 · The P0746 code is a diagnostic trouble code that indicates a problem with the pressure control solenoid in the transmission. This solenoid is responsible for regulating the hydraulic pressure in the transmission. When the solenoid is not functioning correctly, it can cause a number of issues, such as slipping gears, overheating, and reduced ... P0868 Nissan Secondary Pressure Down OBDII Engine Light Trouble Code | Engine-Codes.com. It can be a short or an open circuit from all those devices. not nescessarly the CVT itself. Warhammer. 2819 posts · Joined 2008. #3 · Jan 23, 2014. Checked the service manual and it looks like it's one of your transmission control solenoids that is ...When the P0746 OBD-II DTC is set, the powertrain control module (PCM) detected a problem with the transmission pressure control solenoid "A". Most automatic transmissions have at least three solenoids, which are solenoids A, B, and C. Trouble codes associated with solenoid "A" are P0745, P0746, P0747, P0748, and P0749.dougmac. 566 posts · Joined 2013. #3 · Dec 31, 2014. P0746 is caused when the transmission detects a clutch slipping. In response the transmission returns to the previous range and sets the code. If a relearn does not solve the problem, you hay have a failing clutch.2009 Murano: Valve Body didn't fix issue. I bought an 09 Murano with known transmission problems. It was in limp mode, revving freely in neutral and park, but not moving in drive, and only moved (barely) in reverse. When I picked it up, it gave 2 codes, P0746 and P0500. I narrowed it down to 3 possible problems:After installation car ran fine for few miles then bam!! received a P0746 & P0797 code. Entire trans was dropped again and they found small leak on clutch basket, repaired the seal with viton seal to include both input and output shaft seals. After the shop put everything back together and they clear the codes, the codes keep coming back up ...The P0746 Nissan code means that the pressure control solenoid 'A' is malfunctioned and needs to be replaced. It can cause engine light on, transmission shift shock, and other symptoms. The web page explains the possible causes, tech notes, cost to diagnose, and how to fix the code. P0746, I think, I was at 3/4 to WOT on a downshift 5-4. The code was P0746 (Pressure control solenoid preformance stuck off) So my question is how concernd should I be? The trans is stock for now, and I don't normally drive this hard at all. PPE tune is at level 1 (+60hp)., Quando o P0746 OBD-II DTC é definido, o módulo de controle do trem de força (PCM) detectou um problema com o solenóide de controle de pressão da transmissão "A". A maioria das transmissões automáticas tem pelo menos três solenóides, que são os solenóides A, B e C. Os códigos de problemas associados ao solenóide "A" são os ..., P0746. Definition: Line Pressure Solenoid System (Drive current range out) (CVT) Description: Transmission range switch position: D. Throttle position sensor voltage: 1.37 volts or more. Engine speed: 450 r/min or more. Transmission fluid temperature: 20°C (68°F) or more. Transmission fluid temperature: 180°C (356°F) or less., P0776 is a diagnostic trouble code (DTC) for "Pressure Control Solenoid B Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light …, The code P0746 basically means the transmission fluid of your car does not have sufficient pressure. Due to this, there is no right hydraulic pressure for which your car’s transmission fails to function properly. So, this is just a brief of what this code is about. Now, reading along, you can get to know every insight about it that we have here., OBD2 Code P0746 Mercedes definition: The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the Transmission Control Module (TCM). Symptoms. Possible sumptoms of OBD code P0746 Mercedes, MIL ON with DTC P0746, P0776, P0841, and/or P0965 stored. NOTE: The vehicle may hesitate and/or have reduced power. Replace the CVT assembly. See page 17 for important pre-authorization information. The CVT belt checks out OK. Remove the control valve and inspect the CVT belt. Evidence of CVT belt slippage. Replace the control valve., P0746 is a diagnostic trouble code for a problem with the transmission pressure control solenoid "A". It can cause symptoms such as vehicle entering limp mode, transmission slips, overheating, fuel economy decrease and misfire-like symptoms. The web page explains the causes, severity, symptoms and common repairs for this code., P0717 is a somewhat rare OBD2 trouble code that can occur in the Jeep Patriot. While it illuminates the check engine light, the code warns of a transmission-related error, specifically that the input shaft/turbine speed sensor is not sending a signal. P0717 is a generic code (it has the same meaning for any vehicle made., P0746 HONDA Clutch Pressure Control Solenoid Valve A Stuck Off | AutoCodes . 2008 Odyssey Touring-Silver 2002 GMC Sierra SLT LB Z71-Red 1998 Nissan 200SX SE-Blue. Save Share. Like. D. darknights Discussion starter, 17130 - Pressure Control Solenoid 1 - P0746 - 012 - Implausible Signal or Stuck Off - Intermittent a) what DSG model/size/ID is installed in my car? b) on 'tradional' transmission with similar code, the 'valve body' can be replaced with a refurbished one. Not sure if DSG trannies have such a thing? c) Suggestions to trouble shoot the issue., The only code i have ever pulled p0746. I am still having issues with my Trucks Transmission... It shifts flawlessly when it is cold, but when warmed up at all it struggles going from 3rd to 4th and then 4th to OD. If its not shifting then I manually push the "overdrive" button to off, then turn it back on and it instantly shifts., The automobile fault code P0744 indicates a problem with the Torque Converter Clutch (TCC) Solenoid Valve. Symptoms may include erratic shifting, transmission slipping, or the transmission not engaging properly. The code is often caused by low transmission fluid level, dirty transmission fluid, a faulty TCC solenoid valve, or issues with the ..., PART 2 - Video series on diagnosing and repairing a P0746 pressure control valve solenoid A stuck off on a 2013-2021 Nissan Sentra.https://onlineautorepairv..., P0746 is a diagnostic trouble code for a problem with the transmission pressure control solenoid "A". It can cause symptoms such as vehicle entering limp mode, transmission slips, overheating, fuel economy decrease and misfire-like symptoms. The web page explains the causes, severity, … See more, P0746 and P0746 after getting solenoid replaced two weeks ago. 2015 Forester with 105k miles on it. Had an AT Oil High Temp light come in while driving two weeks ago immediately pulled over and idled until it cleared. I took it into the dealership and they said it seemed the solenoid valve body was stuck and they replaced it., OBD-II Code P0746 is defined as a Pressure Control Solenoid 'A' Performance/Stuck Off. The Transmission Control Module (TCM) uses Pressure Control Solenoids ..., Nissan NS-3 CVT Fluid and Loctite 5460 Sealant can be ordered through the Nissan Maintenance Advantage program: Phone: 877-NIS-NMA1 (877-647-6621) or Website: Order via link on dealer portal www.NNAnet.com and click on the "Maintenance Advantage" link., 2011-2013MY 5.2L Diesel 4HK1 P0503, P0707, P0708, P0742, P0746, P0751 2011-2013MY 3.0L Diesel 4JJ1 P0756, P0761, P0766, P0776, P0796, P084B Follow the diagnostics for these codes. If no mechanical fault can be found during normal diagnosis, follow the service procedure in this bulletin to correct the concern., =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====nonda Auto DIY Center is the biggest ..., The P0868 code is a generic OBD-II code that detects a problem with the transmission fluid pressure. Transmission fluid serves to lubricate the transmission, and for vehicles with automatic transmissions, to cool the transmission system as well. When the powertrain control module (PCM) detects that the pressure of the transmission fluid is ..., Nissan Juke Service and Repair Manual / Transaxle & transmission CVT: RE0F10B / DTC/Circuit diagnosis / P0746 pressure control solenoid A. Description. The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the TCM., November 15, 2021 by Jason. P0868 is a generic DTC code, which means it has the same definition for the Nissan Altima as it would any other vehicle. This particular code indicates that the transmission fluid pressure is below the minimum operating specs. If your Altima has P0868 the first thing you should do is check the transmission fluid., P0746 is a code for pressure control solenoid performance or stuck off, which can affect transmission shifting and fuel efficiency. Learn how to diagnose and fix this …, Two Codes P0746 & P0777 Transmission rough shifting. In my 05 model, I am experiencing extremely hard upshifting from 1-2 2-3 3-4, 4-5. Downshifts are okay. Before the check engine light came on, the car actually seemed as if it was starting off in a high gear as there was no acceleration, but that problem has subsided., Motivo: Cableado, solenoide de presión de aceite de la transmisión. Se debe de tener en cuenta que el código de diagnóstico OBD2 P0746 es un código genérico, por lo que este código DTC puede ser provocado en cualquier automóvil independientemente de que sea un vehículo de la marca Mitsubishi o de cualquier otra marca., Nissan TSB NTB20-036A. The customer reports a transmission judder (shake, shudder, single or multiple bumps or vibration), hesitation on acceleration, lack of power or RPM flare. One or more of the following DTC (s) may be stored: P0746; P0846; P0868; P0965; P17F0; P17F1; P17F2; P17F3; P17F4; P2857; P2858; P2859; P285A., Labor: 1.0. The cost to diagnose the P0746 Volkswagen code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour., TRANSMISSION SOLENOID REPLACEMENT LOCATION JEEP COMPASS JEEP PATRIOT DODGE DARTIf you have Kia and you need to replace the transmission solenoid on Dodge Jee..., Satisfied Customers: Experience: Verified. Chris (aka-Moose) and 87 other Nissan Specialists are ready to help you. Ask your own question now. Chris (aka-Moose) 83,441 Satisfied Customers. 24 years of experience diagnosing & repairing. Chris (aka-Moose) is online now., MIL ON with DTC P0746, P0776, P0841, and/or P0965 stored. NOTE: The vehicle may hesitate and/or have reduced power. Replace the CVT assembly. See page 17 for important pre-authorization information. The CVT belt checks out OK. Remove the control valve and inspect the CVT belt. Evidence of CVT belt slippage. Replace the control valve., 2007 toyota camry with code P0746,P0798 and P2714, will not go over 2000rpm, yes reset it Code pressure control - Answered by a verified Toyota Mechanic. We use cookies to give you the best possible experience on our website., DTC P0476 indicates an exhaust back pressure control valve performance malfunction was detected during KOER On-Demand Self Test. Possible causes: -- stuck or damaged turbocharger wastegate valve. -- misadjusted or damaged linkage. -- restricted exhaust. -- exhaust leaks.