Guide To P20F7 OBD Error Code Solutions

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The trouble code P20F7 can be defined as Reductant Injection Valve Stuck Open Bank 2 Unit 1. The reductant injection valve is being monitored by the engine control module. This trouble code would be set by the ECM when the reductant injection valve would not be as per the specifications set by the manufacturer.

If the engine control module would detect a variation in the voltage coming from the reductant injection valve that is outside the parameters set by the automobile manufacturer, then it would store the P20F7 error code. This would also give rise to the illumination of the check engine light. The engine control module, powertrain control module or the transmission control module monitors this circuit depending upon the particular automobile.

What causes this problem with the Reductant Injection Valve Stuck Open Bank 2 Unit 1?

• Unusable reductant injection valve
• Issue of unbolted reductant injection valve control circuit
• The DEF in the reservoir might not be sufficient
• There can be distorted 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!

Willing to know some common symptoms of OBD Trouble Code P20F7? Your wish is our demand. Have a look at them below:

Common Symptoms

• Sometimes there might be no visible symptoms present
• Black smoke might start emitting from the tailpipe during acceleration
• The overall engine performance might start declining
• Decrease in the fuel efficiency

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P20F7:

• Adjust the flawed PCM or programming error
• You must fix the defective electronic control unit
• It is essential to restore the flawed reductant injection valve
• Rehabilitate the defaults in the SCR controller
• Carefully adjust the faults in the reductant injection valve control circuit

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If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

A technician begins by hooking the vehicle to an OBD-II scanner to verify that the code is present, and check for other codes. The freeze frame data along with current data is recorded, and the codes are then cleared to see if they reoccur.

Visual inspection of the wiring and connectors to check for loose connections, corrosion, or shorts is done.

A specialized tool may be used to test the reductant injection valve. Other tests of the reductant injection valve circuit and its components may help pinpoint the problem, as well as inspection of the wiring and connectors.

Disconnect and check the resistance and signal voltage from the reductant injection valve control circuit. If all the components check out, inspect for the fault in the PCM as it can sometime store wrong OBD code and thus might need replacement or reprogramming.

Common Mistakes When Diagnosing The P20F7 Code

• Some issues related to the PCM
• Failure in the DEF injector
• Issues related to the wiring