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 wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0012:00ELECTRIC VARIABLE VALVE TIMING CONTROL SYSTEM - (OVER-RETARDED) THIS CONCERN MAY BE CAUSED BY VARIABLE VALVE TIMING (VVT) ACTUATOR SPRING SHAFT FATIGUEP0012:00Electric variable valve timing control system: Over-retardedManufacturer communications
3Original wording in English
MAZDA
Reported code forms P0012:00
Some customers may experience a check engine light illuminating with DTC P0012:00 stored in PCM memory. DTC P0012:00 - Electric variable valve timing control system: Over-retarded. NOTE: This concern occurs only on…
MAZDA
Reported code forms P0012:00
SOME VEHICLES MAY EXPERIENCE A CHECK ENGINE LIGHT ON WITH DTCS P0011:00 AND/OR DTC P0012:00 STORED IN MEMORY. • P0011:00: ELECTRIC VARIABLE VALVE TIMING CONTROL SYSTEM - (OVER-ADVANCED) • P0012:00: ELECTRIC VARIABLE…
MAZDA
Reported code forms P0012:00
SOME VEHICLES MAY EXPERIENCE A CHECK ENGINE LIGHT ON WITH DTCS P0011:00 AND/OR DTC P0012:00 STORED IN MEMORY. • P0011:00: ELECTRIC VARIABLE VALVE TIMING CONTROL SYSTEM - OVER-ADVANCED) • P0012:00: ELECTRIC VARIABLE…
Check vehicle applicability
2A 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.
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.