hi I'm Eric an automotive technician with 15 years of experience this video is going to explain the meaning of this error code and show you how to diagnose and fix it the OBD2 fault code p06 B8 means that there is a failure in the internal control module non-volatile random access memory of the powertrain control module PCM this can result in a loss of communication with other control modules in the vehicle when you encounter this OBD error the vehicle typically exhibits the following symptoms additional warning lights on the instrument cluster May illuminate now we talk about
possible causes and how to diagnose and fix wiring issue to diagnose a wiring issue visually inspect the wiring harness for any signs of damage such as fraying corrosion or brakes use a Multimeter to test for continuity and check for any loose connections repair or replace any damaged wiring ensure all connections are secure and free from corrosion powertrain control module PCM failure use an OBD2 scanner to retrieve Freeze Frame data and any additional fault codes check the PCM for any signs of physical damage or corrosion test the pcm's power and ground circuits to ensure proper voltage
and continuity if a PCM failure is confirmed it will need to be replaced with a new unit ensure that the replacement PCM is programmed with the correct vehicle software if there are uncertainties feel free to engage in discussions by leaving a comment alternatively when facing difficulties it is advisable to seek assistance from a professional auto repair shop and technicians it is not recommended to handle it independently especially when uncertain thanks for watching
