Reference meaning
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.
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A 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.
Scan worksheet →Manufacturer communications
12Original wording in English
BUICK, PONTIAC
GENERAL MOTORS: MALFUNCTION INDICATOR LAMP-CHECK ENGINE LIGHT ON, HESITATION, REDUCED ENGINE POWER MESSAGE, DTCS P1125, P2101, P2120, P2125 OR P2138 SET (PERFORM REPAIR AS OUTLINED). *PE
BUICK, PONTIAC
GMC:SERVICE ENGINE SOON LIGHT AND DTC P1125, P2101, P2120, P2125, OR P2138. THE VEHICLE WAS EXHIBITING A HESITATION AND/OR HAD THE REDUCED POWER MODE SYMBOL OR MESSAGE DISPLAYED. *PE
AUDI
LONG TERM FUEL TRIM - SYSTEM TOO RICH. DIAGNOSTIC TROUBLE CODE P1123, P1125, P1137 AND P1139. *TT
CHEVROLET
MALFUNCTION INDICATOR LAMP (MIL) CHECK ENGINE LIGHT ON DIAGNOSTIC TROUBLE CODE (DTC) P1125 OR P2138, OR BOTH. *TT
Check vehicle applicability
55A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
Throttle position sensor intermittent
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.