What does this code mean?
The controller detects that camshaft A timing on Bank 1 is too advanced or does not follow the expected control behavior. In the cited Ford and GM applications this is the intake camshaft. Bank 1 contains cylinder 1; its physical side depends on the engine. The code does not identify a failed position sensor by itself.
Sources and interpretation [1]
A code identifies a detected condition, not a part that must automatically be replaced.
Before replacing a part
Preserve freeze-frame data and compare commanded with actual cam timing using the correct engine procedure. Check the applicable bulletin and build date before deciding which actuator components need inspection; do not treat a Bank 2 or exhaust procedure as interchangeable.
Manufacturer communications
3Original wording in English
BUICK, CHEVROLET, GMC, PONTIAC, SATURN
Reported code forms P0011
This Preliminary Information communication provides information to the technician about vehicles that may have a short, sharp rattle noise from the front of the engine at start up. Technician may find Diagnostic Trouble…
BUICK, CHEVROLET, GMC, PONTIAC, SATURN
Reported code forms P0011
This Preliminary Information communication provides information to the technician about vehicles that may have a short, sharp rattle noise from the front of the engine at start up. Technician may find Diagnostic Trouble…
CHEVROLET, GMC, PONTIAC, SATURN
Reported code forms P0011
PONTIAC/SATURN/CHEVROLET: DTC P0011 (INTAKE CAMSHAFT POSITION (CMP) SYSTEM PERFORMANCE) AND/OR P0014 (EXHAUST CAMSHAFT POSITION (CMP) SYSTEM PERFORMANCE). THEY MAY HAVE FOLLOWED ESI DIAGNOSTICS AND/OR THE CODE(S)…
Check vehicle applicability
2A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Sources and interpretation
These explanations are editorial summaries of the linked manufacturer material. PDF page numbers count from the first file page. Original publications are in English; translations are reference aids. A cited edition is not a claim that it is the manufacturer's latest instruction.
- 2024–2025 MY OBD System Operation Summary for Gasoline Engines ↗
Ford Motor Company · PDF page(s) 76 ·
- 21-NA-146 · MIL illuminated, P0011 and/or P0014 ↗
General Motors · PDF page(s) 1, 2 ·
Source check date · 2026-10-27
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.