P068B - OBD Trouble Code

<<See All OBD Codes

All the power inputs are monitored by the engine control module. The engine control module would set up the P068B trouble code when it would remain powered up after the ignition switch has been turned OFF.

The trouble code P068B can be identified as ECM/PCM Power Relay De-Energized Performance - Too Late.

Want to learn something more about this fault 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. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another.

This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

What causes this problem with the ECM/PCM Power Relay De-Energized Performance - Too Late?

• Issue of blown fuse or fusible link
• There can be some faults in the PCM power relay
• The circuit between the power relay and the PCM might be opened or shorted

1. Auto Transmission Shift Solenoid - A faulty Auto Transmission Shift Solenoid can be troublesome. You can always rely on us as we have best auto parts for our customers.
2. Engine Control Module - OBD Code P068B can appear because of faulty Engine Control Module.
3. Powertrain Control Module - Everything is fine with Powertrain Control Module and still P068B code triggering? Then you must get your Powertrain Control Module checked.
4. Auto Transmission Control Module - Do you remember when was the last time you got your car Auto Transmission Control Module checked up? A faulty Auto Transmission Control Module can cause a lot of issues like displaying P068B code.
5. Car Battery - Are there some faults in your car battery? Don’t waste time and get them replaced or else P068B code can turn up.
6. Electronic Control Unit - OBD Code P068B can appear because of faulty Electronic Control Unit.
7. Battery Cable Replacement Terminal - Everything is fine with Electronic Control Unit and still P068B code triggering? Then you must get your Battery Cable Replacement Terminal checked.

There could be countless symptoms which that would accompany with this fault code. Willing to know some common symptoms of OBD Trouble Code P068B? Your wish is our demand. Have a look at them below:

Common Symptoms

• Problem of hard or no start in cold weather
• Issues in starting the car engine

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:

• Malfunctioning PCM power relay should be replaced
• Quirky alternator and its wiring and connectors should be repaired or replaced properly
• It is very important to restore the faulty ignition switch

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of ignition switch, connection, blown fuse, power relay, pcm relay, ecm relay, solid state relay, electrical relay, automotive battery, relays, battery connectors, relay switch, starter relay and a lot more. We are sure that now all your issues would be resolved.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P068B code to be stored:

If you want to easily diagnose the P068B fault code, then you will need a source of reliable vehicle information. From it you will glean diagnostic flowcharts, wiring diagrams, connector face views, connector pinout charts, and component locators. Make sure to find component and circuit testing procedures and specifications. All this information would be required to successfully diagnose a P068A trouble code

Then the next step would be to connect the scanner to the vehicle diagnostic port and retrieve all stored codes and freeze frame data. It is very important to note of this information as it may prove useful if the code proves to be an intermittent one. Now once you have recorded all the information, then you should clear the codes and test drive the vehicle until the code is reset or the PCM enters readiness mode. If the PCM enters readiness mode, the code is intermittent and will be even more difficult to diagnose. The condition, which caused the P068A to be stored, may need to worsen before an accurate diagnosis can be reached. On the other hand, if the code fails to reset and there are no drivability symptoms exhibited, the vehicle can be operated normally

Consult your vehicle information source for technical service bulletins (TSB) that replicate the code stored, vehicle (year, make, model, and engine), and symptoms exhibited. If you find the appropriate TSB, it may yield helpful diagnostic information. If the P068A code is immediately reset, then you should proceed with a visual inspection of system related wiring and connectors. Harnesses that have been broken of unplugged should be repaired or replaced as required

If wiring and connectors appear functional, use your source of vehicle information to obtain the appropriate wiring diagrams, connector face views, connector pinout charts, and diagnostic flow charts. Once you have the relevant information, test all system fuses and relays to make sure the PCM power supply relay is being supplied with battery voltage

Common Mistakes When Diagnosing The P068B Code

• Defective powertrain control module power relay
• Some wiring issues
• Powertrain Control Module might start failing

P068A - ECM/PCM Power Relay De-Energized Performance - Too Early