| DTC Data Sheet | |
| System | Powertrain |
| Standard | SAE J2012 / ISO 15031-6 |
| Fault type | Performance |
| Official meaning | B Camshaft Position – Timing Over-Retarded (Bank 2) |
Bank 2 exhaust cam timing is over-retarded versus commanded. Mirror to P0012 but on the bank 2 exhaust phaser.
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P0025 Quick Answer
Bank 2 exhaust cam timing is over-retarded versus commanded. Mirror to P0012 but on the bank 2 exhaust phaser.
What Does P0025 Mean?
B Camshaft Position – Timing Over-Retarded (Bank 2). Bank 2 exhaust cam timing is over-retarded versus commanded. Mirror to P0012 but on the bank 2 exhaust phaser.
Symptoms
- Rough idle
- Sluggish acceleration
- Check engine light
Common Causes
- Low oil pressure to bank 2 VVT
- Stuck-closed VVT solenoid
- Sludge in bank 2 phaser
- Stretched timing chain
- Failed phaser
Diagnosis Steps
You’ll need a scan tool capable of reading live powertrain data, a digital multimeter, and access to the wiring diagram for the specific platform.
- Verify oil pressure and level.
- Compare bank 2 commanded vs actual cam phase.
- Inspect solenoid and chain.
Possible Fixes
- Bank 2 VVT solenoid replacement
- Oil service
- Timing chain kit
- Phaser replacement
Can I Still Drive With P0025?
The vehicle will usually still drive with P0025 stored, but performance, drivability, or emissions will be degraded. The PCM may inhibit emissions monitors and limit closed-loop fueling adjustments. Drive to a workshop, but don’t ignore the code long-term.
How Serious Is This Code?
P0025 is a moderate-priority fault. It will not prevent the engine from running, but unaddressed it can cascade into related faults or damage downstream components such as the catalytic converter. Address within a few drive cycles.
FAQ
Will P0025 clear itself?
Only if the underlying fault was intermittent and self-corrected. Most root causes are persistent and require physical repair.
Can I clear P0025 without fixing it?
You can clear it with a scan tool, but it will return as soon as the fault condition reappears — typically within one or two drive cycles.
Is P0025 related to other codes?
Often, yes. Adjacent codes in the same circuit or system frequently set together — if P0025 is present, scan for related codes and address them as a group.