P0015 - B Camshaft Position - Timing Over-Retarded Bank 1
P0015 is a generic powertrain diagnostic trouble code indicating B Camshaft Position - Timing Over-Retarded Bank 1. It relates to the Fuel & Air Metering and Auxiliary Emission Controls system.
DTC Breakdown (SAE J2012)
| System | Powertrain (P) |
| Type | Generic |
| Subsystem | Fuel & Air Metering and Auxiliary Emission Controls |
| Fault Index | 15 |
| Standard | SAE J2012 / ISO 15031-6 |
What does diagnostic code P0015 mean?
The engine computer logged P0015 after detecting a Variable Valve Timing (VVT) issue with the Bank 1 exhaust camshaft, indicating a over-retarded fault.
Severity Level & Driveability Details
Severity: High
Low engine oil can cause severe internal engine damage. Timing chain wear can cause timing to jump, bending valves on interference engines.
Common Symptoms of P0015
- Rattling engine noise from the front timing cover near Bank 1.
- Rough engine idle and stalling.
- Noticeable loss of engine power under load.
- Check engine light illuminated.
Typical Causes for P0015
- Low engine oil level or insufficient oil pressure to advance the Bank 1 exhaust camshaft.
- VVT oil control solenoid stuck closed or failing on Bank 1.
- Clogged oil passages or internal filter screen in the phaser circuit.
- Worn camshaft phaser actuator on Bank 1.
Diagnostic and Troubleshooting Steps
Check oil level and cleanliness first. Use a scan tool to command the VVT solenoid; the engine should stumble at idle if the solenoid operates. Test solenoid resistance using a multimeter.
Typical Repairs and Fixes
- Checking and topping off engine oil, or performing an oil change.
- Replacing the Bank 1 exhaust VVT oil control solenoid.
- Cleaning or replacing the OCV oil filter screen.
- Replacing the Bank 1 exhaust cam phaser.
Sensor Location & Parts Involved
The VVT solenoid is mounted on the cylinder head near the camshaft gear, while the cam phaser is on the end of the camshaft itself.
Clearing Code & Recurrence
Reset codes with a scan tool and perform a road test to verify VVT solenoid operation.
Emissions & Smog Inspection Impact
Incorrect valve timing leads to incomplete combustion and elevated tailpipe emissions.
Free Check Engine Code Cheat Sheet (PDF)
Got your answer? Keep the top 50 most common diagnostic codes, their meanings, severity levels, and quick fixes handy in your vehicle's glovebox.
Related Diagnostic Codes
Sources & References
This diagnostic guide is compiled and verified against the following authority sources:
- NHTSA TSB Bulletins
- EPA OBD regulations
Frequently Asked Questions about P0015
What does the Bank 1 exhaust camshaft timing over-retarded code P0015 mean?
The engine computer logged P0015 after detecting a Variable Valve Timing (VVT) issue with the Bank 1 exhaust camshaft, indicating a over-retarded fault.
Is it safe to drive with the Bank 1 exhaust camshaft timing over-retarded code P0015 active?
No, VVT timing faults can damage internal engine parts if left unresolved.
How much does it cost to repair a Bank 1 exhaust camshaft timing over-retarded code P0015 fault?
An oil change is $50-$80. Solenoid replacement runs $150-$350. Replacing the timing chain is a major mechanical job costing $1,200-$2,500.
What are the common causes of the Bank 1 exhaust camshaft timing over-retarded code P0015?
Trigger conditions for the Bank 1 exhaust camshaft timing over-retarded code P0015 include: Low engine oil level or insufficient oil pressure to advance the Bank 1 exhaust camshaft., VVT oil control solenoid stuck closed or failing on Bank 1., Clogged oil passages or internal filter screen in the phaser circuit..
Can I clear the check engine light for Bank 1 exhaust camshaft timing over-retarded code P0015?
Reset codes with a scan tool and perform a road test to verify VVT solenoid operation.
Will the Bank 1 exhaust camshaft timing over-retarded code P0015 cause an inspection failure?
Incorrect valve timing leads to incomplete combustion and elevated tailpipe emissions.