What does this code mean?
This is the Bank 1 camshaft B over-advance/performance code. In the cited applications B is the exhaust camshaft, while P0011 concerns intake. A timing-control fault can involve the actuator mechanism rather than the position sensor; the code alone does not establish which component has failed.
Sources and interpretation [1]
A code identifies a detected condition, not a part that must automatically be replaced.
Before replacing a part
Confirm exhaust-side identification and compare commanded and actual timing. On the specific GM L3B application, the bulletin distinguishes repairs before and after 20 March 2019; that build-date rule must not be generalized to other engines.
Manufacturer communications
3Original wording in English
CHEVROLET, GMC, HUMMER
Reported code forms P0014
This Preliminary Information communication provides information to the technician about vehicles that may have engine belt noise, rough idle, and/or Service Engine Soon Malfunction Indicator Lamp on. Technician may find…
CHEVROLET, GMC, HUMMER
Reported code forms P0014
A ROUGH IDLE / RUNNING CONCERN MAY BE ENCOUNTERED WITH A P0014 AND / OR P0017 DTC. *TT
CHEVROLET, GMC, HUMMER
Reported code forms P0014
ROUGH IDLE WITH DTC P0014 AND/OR P0017 - INSPECT CAM ACTUATOR SOLENOID SCREENS AND CRANKSHAFT END PLAY. *TT
Check vehicle applicability
5A 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.