P1091
P1091
DTC P1091, sometimes indicated as P109100 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 air/fuel mixture causing p1091.
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.
- PI1518A - ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC: Stop/start system malfunction, dts P1064, P1065, P1068, P1070, P108D, p108r, or P1091 set - equipped with stop/start system (rpo kl9) - PI1518A - EQUIPMENT
CADILLAC: Stop/start system malfunction, dtc P1064, P1065, P1068, P106F, P1070, P108D, P108E, or P1091 set condition/concern some customers may comment that the message stop/start system disabled appears on the dic. There may be a poor ground