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
3Original wording in English
AUDI
Supersedes Technical Service Bulletin Group 00 number 10-01 dated February 5, 2010. Excessive accumulation of deposits on intake valves, intake manifold, fuel injectors and combustion chambers. Engine runs rough after cold start. Excessive engine cranking time. Hesitations while driving. Rough engine idle. Reduced engine perform…
FORD, MERCURY
ISSUE OF A PERCEIVED LACK OF ENGINE BRAKING AND MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED WITH A FALSE DIAGNOSTIC TROUBLE CODE (DTC) P1138 STORED IN MEMORY MAY OCCUR ON SOME VEHICLES . *MJS
FORD, MERCURY
INFORMATION PERTAINING TO LACK OF ENGINE BRAKING WITH DIAGNOSTIC TROUBLE CODE (DTC) P1138 PRESENT DURING KEY ON ENGINE RUNNING (KOER). *TT
Check vehicle applicability
183A 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.
Lack Of HO2S12 Switch – Sensor Indicates Rich
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.