P2806 OBD Error Code: Problem & Solutions

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The trouble code P2806 can be explained as Transmission Range Sensor Alignment. This diagnostic fault code is a generic powertrain code, which means that it would apply to the OBD-II equipped vehicles. The specific repair steps can vary as it depends upon the vehicle make and model. One thing which you must keep in mind that its symptoms as well as causes would surely vary as it depends upon a number of things. The transmission range sensor alignment is being monitored by the engine control module. This trouble code would be set by the ECM when the transmission range sensor alignment signal would not be as per the specifications set by the manufacturer.

The transmission range sensor is also known as the PRNDL input or neutral safety switch. It would tell the transmission control module and the engine control module that the transmission is in park, reverse, neutral, drive, low, 2nd, 3rd etc. It is directly connected to the manual valve of transmission, so when the shift lever is moved from park to drive, then the Transmission Range Sensor would transfer this critical information to the above-mentioned vehicle control module systems. Now when the input from the transmission range sensor would be inconsistent or unreasonable, then the powertrain control module would set the P2806 error code. 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.

What causes this problem with the Transmission Range Sensor Alignment?

• There can be distorted transmission range sensor
• Transmission range sensor harness might be unlocked
• Transmission range sensor circuit bad electrical connection

1. Manual Transmission Shifter - If your car is not going into gear at all, then it might not be a defective transmission. It can just be a flawed transmission shifter cable. It would be nice if you get it replaced on time.
2. Engine Control Module - The solenoid might cause a short in the engine control module because of corrosion in the solenoid or the wire running from the solenoid to the ECM harness.
3. Electronic Control Unit - The ECU power management control module keeps in check the hybrid battery charging functions. If the ECU is faulty, the battery pack will not be able to properly get charged and thus, the ECU might need replacement.
4. Transmission Fluid Pump Harness - The fluid pump harness can also be faulty causing transmission to underperform due to transmission slipping and harsh shift. Thus, check for harness faults and replace it now!
5. Powertrain Control Module - A trouble with the PCM would mean that it is unable to determine the right fuel mixture and would send the car engine either more or less fuel than it requires. Now when the engine gets more, the carbon emission would increase and fuel economy would drop. In case of the opposite, the engine will choke, stutter, and might start stalling sometimes.
6. Diagnostic Tool - Usually any OBD code problem requires deep insight into the problem and high-grade tools in order to fix it properly. Thus, buy quality diagnostic tools form us!

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P2806 here:

Common Symptoms

• Appearance of the service engine soon light
• Auto transmission not shifting correctly
• Rise in the fuel consumption

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:

• Make sure to mend the faulty transmission range sensor
• Repair or replace the quirky ECM/PCM
• Carefully adjust the faults in the transmission range sensor circuit
• Recondition the non-functioning transmission range sensor harness

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

• As an initial step the mechanic will carefully inspect the vehicle with the help of a scanner.
• After this, the technician will connect a scanner to the diagnostic code so that he can recover all the codes and freeze frame data.
• Note down this information as it can clearly help for further diagnosis.
• After careful inspection, he will reset the code and test drive your vehicle to check for reappearance of the codes.
• He will know that an intermittent condition persists, if the code does not return instantly.
• But if the error code returns quickly, the vehicle is test driven, and then he has to inspect the transmission fluid.
• If the transmission range sensor alignment is damaged, the mechanic will replace them quickly.
• Most often, whenever the mechanic carries out any repair work, he will reset the code and test drive your car, to check if the codes return immediately. This can preferably help the mechanic to know what caused this error code in the vehicle.

Common Mistakes When Diagnosing the P2806 Code

• Non-performance of the transmission control module
• Non operative transmission range sensor
• Failure in the powertrain control module
• Issues related to the wiring