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
5Original wording in English
BUICK, CADILLAC, CHEVROLET, GMC, HUMMER, PONTIAC, SAAB, SATURN
Reported code forms P2138
This technical bulletin provides repair information for repairing the IP to body harness connector to correct a customer concern for intermittent Malfunction Indicator Lamp (MIL) illuminated with Reduced Engine Power…
BUICK, CADILLAC, CHEVROLET, GMC, HUMMER, PONTIAC, SAAB, SATURN
Reported code forms P2138
This technical bulletin provides repair information for repairing the IP to body harness connector to correct a customer concern for intermittent Malfunction Indicator Lamp (MIL) illuminated with Reduced Engine Power…
CADILLAC
Reported code forms P2138
GM: THE MALFUNCTION INDICATOR LAMP IS ILLUMINATED WITH DTC P2138 OR P06A3. ENGINEER WOULD LIKE TO GATHER INFORMATION FROM THE VEHICLE PRIOR TO ANY ATTEMPTS TO REPAIR THE VEHICLE. *JS UPDATED 05/19/2014 *JS
CADILLAC
Reported code forms P2138
This Preliminary Information communication provides information to the technician about vehicles that have Service Stabilitrak Message being displayed in the driver?s information center. Technician may find Diagnostic…
BUICK, CADILLAC
Reported code forms P2138
REDUCED ENGINE POWER, SERVICE ENGINE SOON (SES) LIGHT WITH ONE OR MORE OF THE FOLLOWING DTCS P0121, P0221, P2119, P2122, P2138, P2176. *TT UPDATED 08-20-07. *KB
Check vehicle applicability
15A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | CTS | 2018 |
| Cadillac | CTS | 2017 |
| Cadillac | CTS | 2016 |
| Cadillac | CTS | 2015 |
| Cadillac | CTS | 2014 |
| Cadillac | CTS | 2013 |
| Cadillac | CTS | 2012 |
| Cadillac | CTS | 2011 |
| Cadillac | CTS | 2010 |
| Cadillac | CTS | 2009 |
| Cadillac | CTS | 2008 |
| Cadillac | CTS | 2007 |
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.