P1A21

DTC P1A21, sometimes indicated as P1A2100 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the causing p1a21.

DTC Trouble Code Search

Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

0804823 - POWER TRAIN
JEEP: Flash: battery pack control module (bpcm) diagnostic and system updates customers may experience a false malfunction indicator lamp (mil) illumination related to phev battery: ? P1A21-00 - hv battery contactor control sequence incorrect. ?
0805023 - POWER TRAIN
JEEP: Flash: battery pack control module (bpcm) diagnostic and system updates customers may experience a false malfunction indicator lamp (mil) illumination related to phev battery: ? P1A21-00 - hv battery contactor control sequence incorrect.
0804823 - POWER TRAIN
JEEP: Flash: battery pack control module (bpcm) diagnostic and system updates customers may experience a false malfunction indicator lamp (mil) illumination related to phev battery: ? P1A21-00 - hv battery contactor control sequence incorrect. ?
0805023 - POWER TRAIN
JEEP: Flash: battery pack control module (bpcm) diagnostic and system updates customers may experience a false malfunction indicator lamp (mil) illumination related to phev battery: ? P1A21-00 - hv battery contactor control sequence incorrect.