What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
6Original wording in English
CADILLAC, CHEVROLET
Reported code forms P1B03
This Preliminary Information communication provides information to the technician the steps to diagnose and repair vehicles that have Check Engine Light illuminated with an "Engine Unavailable" and ?Reduced Propulsion?…
CADILLAC, CHEVROLET
Reported code forms P1B03
This bulletin provides a diagnostic service procedure to correct customer concerns of Reduced Propulsion (EREV), Malfunction Indicator Lamp (MIL) Illuminated with DTC P0C17, P1B03 and/or P0C01 Set.
CHEVROLET
Reported code forms P1B03
This Bulletin provides information to diagnose a Loss of Propulsion or No Start with the MIL ON and DTC P0A3F or P1B03 set.
CADILLAC, CHEVROLET, OPEL
Reported code forms P1B03
This Preliminary Information communication provides information to the technician the steps to diagnose and repair vehicles that have Check Engine Light illuminated with an "Engine Unavailable" and “Reduced Propulsion”…
CADILLAC, CHEVROLET
Reported code forms P1B03
This Preliminary Information communication provides information to the technician the steps to diagnose and repair vehicles that have Check Engine Light illuminated with an "Engine Unavailable" and ?Reduced Propulsion?…
CADILLAC, CHEVROLET
Reported code forms P1B03
CHEVROLET/CADILLAC: WITH ENGINE UNAVAILABLE AND PROPULSION POWER REDUCED, CHECK ENGINE LIGHT IS ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE (DTC) P1B03, P0C01, P0C4E AND ROUGH OPERATION WITH ENGINE RUNNING. MODEL 2014-2015…
Check vehicle applicability
8A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.