Guide To P20E7 OBD Error Code Solutions

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The trouble code P20E7 can be elucidated as Reductant Injection Air Pressure Too High. This error code would start appearing when the powertrain control module would detect an an excess reductant injection air pressure. It is the catalyst system which is fully responsible for reduction of all exhaust emissions although certain applications are also equipped with a NOx trap. The exhaust gas recirculation systems go another step further in the reduction of NOx.

This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another. The reductant injection air pressure is being monitored by the engine control module. This trouble code would be set by the ECM when the reductant injection air pressure would not be as per the specifications set by the manufacturer.

What causes this problem with the Reductant Injection Air Pressure Too High?

• The reductant injection air pressure might be too high
• The reductant injection air pressure sensor system circuit might be unlocked
• Malfunctioning reductant injection air pressure sensor
• There can be inoperative SCR controller/PCM or programming error

1. Exhaust Gas Recirculation Valve - Did you just see check engine light flashing on your dashboard? If the computer would detect some fault with the automobile’s EGR valve circuit, then it would set up the check engine light so that the driver is notified about the fault. Don’t waste time and get them replaced or else this fault code can turn up.
2. Diesel Exhaust Fluid Pump - The diesel exhaust fluid pump needs to work properly if the transmission system has to perform. If it is not functioning, the transmission may slip and cause harsh shifts too. Thus replace faulty pump now and buy a new one from us!
3. Engine Control Module - Is your car engine light still staying ON after resetting or your car engine is turning off for no reason? Then these are some common symptoms indicating that your car engine control module is defective.
4. Powertrain Control Module - The PCM works as the central computer system in an automobile’s mechanism. This auto part is the in charge of all the constituents as well as the functions performed by them. Having such enormous importance in the operation of all the parts means that any defect in it will affect almost every aspect of a car.
5. Fuel Injector - If there is a leakage in the fuel injectors, then it might cause rise in the fuel consumption, fuel odours around the vehicle and hard starting. You can always rely on us as we have best auto parts for our customers.
6. Electronic Control Unit - The ECU is a major component of your car's onboard computer. It's used to regulate many systems and subsystems in your car's engine, drive train and other major components. Visit us to buy best quality ECU online.
7. Diagnostic Tools – Take help of a professional mechanic to diagnose OBD code error. Use high grade diagnostic tools to resolve this issue. Buy new tools and equipment form us!

You might be thinking that how would you diagnose these problems? We at Parts Avatar Canada would help you diagnose the major symptoms easily.

Common Symptoms

• Check engine light might come into signal
• Decrease in the overall fuel efficiency
• There might be a lot of black smoke coming out from vehicle exhaust
• The engine performance might start declining
• Existence of some other SCR related codes

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• It is essential to restore the flawed reductant injection air pressure sensor circuit
• Repair or replace the quirky engine control module
• Rehabilitate the defaults in the reductant injection air pressure sensor system parts
• Carefully adjust the faults in the SCR controller/PCM or programming error
• Recondition the non-functioning electronic control unit

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Here are some steps which you should follow in order to diagnose this fault code:

After verifying the P20E7 code with an OBD-II scanner, the mechanic should begin with a visual inspection of all electrical components, especially looking for some issues in the reductant injection air pressure. Any issues should be repaired, and the code should be cleared from the system. If the code reappears after a retest, the mechanic should then move on to performing voltage tests and resistance tests on the sensor, and comparing the information to the manufacturer’s specifications. If the readings are within the correct limits, then the sensor needs to be replaced. However, if the readings are not within the correct limits, then the issue lies elsewhere. The mechanic should continue checking each possible cause, clearing the code and retesting the system after each attempt, to be sure that the correct solution is found.

Common Mistakes When Diagnosing The P20E7 Code

• PCM might start failing
• Some issues related to the reductant injection air pressure sensor
• Issues with the car wiring