P0015
Fix within a few daysYour engine's computer detects that the exhaust camshaft on Bank 1 is not in the correct position; it's too far behind where it should be.
Code P0015 means your exhaust camshaft timing on Bank 1 is over-retarded. Common causes: VVT solenoid (60%), low/dirty oil (20%), cam phaser (15%). Drivability: Yes, for short trips, fix soon. Repair cost: $50-$200 DIY, $150-$600 professional.
Can I Drive With P0015?
Yes, for short trips only
Essential trips under 10 miles, avoid highways and heavy acceleration. Fix within a few days.
Stop driving immediately if: Flashing check engine light, significant power loss, loud engine noises, or engine stalling frequently.
Symptoms of P0015
- 1Engine runs rough or idles poorly
- 2Reduced engine power or acceleration
- 3Decreased fuel economy
- 4Engine may stall, especially at idle
- 5Difficulty starting the engine
Common Causes of P0015
Parts most likely causing this code, ranked by probability
This solenoid controls the oil flow to the cam phaser, adjusting the exhaust camshaft timing. If it's stuck or faulty, it cannot properly retard the timing.
60% of P0015 cases are fixed by replacing this part
The VVT system relies on clean engine oil at the correct pressure to operate. Sludge or low oil prevents proper cam timing adjustment.
20% of P0015 cases are resolved by an oil change or topping off oil
This mechanical component directly adjusts the camshaft position. If it's internally faulty or clogged with sludge, it cannot achieve the commanded timing.
15% of P0015 cases are fixed by replacing this part
Damaged wiring or a corroded connector prevents the engine computer from sending proper signals to the VVT solenoid.
4% of P0015 cases are fixed by repairing wiring or connectors
A faulty engine computer can incorrectly command the VVT system or misinterpret sensor readings, leading to this code.
1% of P0015 cases are fixed by replacing the ECM/PCM
Check These First (Before Buying Parts)
- Check your engine oil level and condition. Low or dirty oil is a primary cause of VVT issues. Top off or change oil if needed.
- Visually inspect the wiring harness and electrical connector for the exhaust VVT solenoid on Bank 1 for any signs of damage, fraying, or corrosion.
How to Diagnose P0015
- 1Check engine oil level and condition. Perform an oil change if oil is low or dirty.
- 2Locate the exhaust VVT solenoid on Bank 1. Inspect its electrical connector and wiring for damage or corrosion.
- 3Remove the VVT solenoid and inspect it for debris or sludge. Test its electrical resistance with a multimeter (compare to specifications).
- 4If possible, swap the exhaust VVT solenoid with the intake VVT solenoid (if accessible and identical) to see if the code changes to an intake cam code.
- 5If the solenoid tests good, consider checking engine oil pressure and inspecting the camshaft phaser for internal issues (often requires valve cover removal).
P0015 on Popular Vehicles
Toyota Camry
2007-2024Toyota's VVT-i systems are sensitive to oil quality. P0015 on a Camry often points to a clogged or failing exhaust VVT solenoid (oil control valve) or sludge buildup in the engine due to extended oil change intervals.
75% fixed by replacing the VVT solenoid or performing an oil change
Honda Accord
2003-2024Honda's VTEC/VTC systems can trigger P0015. The exhaust VTC oil control solenoid is a common failure point. Ensure proper oil level and use the correct viscosity oil.
70% fixed by replacing the VVT solenoid or performing an oil change
Chevrolet Silverado
2007-2024On GM trucks with VVT, P0015 can be caused by a failing exhaust VVT solenoid or, less commonly, a faulty camshaft phaser. Oil pressure issues or sludge can also contribute.
65% fixed by replacing the VVT solenoid
Frequently Asked Questions
What does P0015 mean?
P0015 indicates that your engine's computer has detected that the exhaust camshaft on Bank 1 is positioned too far behind its target, meaning it's 'over-retarded'.
Can I drive with P0015?
Yes, for short trips only. You will experience reduced engine performance and fuel economy. Prolonged driving with this code can lead to further engine damage, so fix it within a few days.
Will P0015 clear itself?
No, P0015 will not clear itself. The underlying mechanical or electrical issue needs to be addressed. After the repair, you will need to clear the code with a scan tool.
How do I fix P0015 myself?
Start by checking your engine oil level and condition; change it if necessary. If that doesn't fix it, locate and inspect the exhaust VVT solenoid on Bank 1. You can test its electrical resistance or try replacing it. If the solenoid is good, the issue might be with the camshaft phaser, which is a more involved repair.
How much does it cost to fix P0015?
DIY costs range from $50-$200, primarily for an oil change or a new VVT solenoid. Professional repair costs typically range from $150-$600 for a solenoid replacement. If the camshaft phaser needs replacement, costs can be $800-$2000+ due to higher labor.
P0015 keeps coming back - why?
If P0015 keeps returning, it often means the initial repair didn't address the root cause. Common reasons include persistent low or dirty oil, a faulty camshaft phaser (even if the solenoid was replaced), or a deeper issue like a clogged oil passage or a failing timing chain component.
Will P0015 fail emissions/smog test?
Yes, P0015 will cause your vehicle to fail an emissions or smog test. The check engine light being on automatically fails the test, and an issue with valve timing directly impacts exhaust emissions.
What's the difference between P0015 and P0014?
P0015 indicates the exhaust camshaft on Bank 1 is 'over-retarded' (too far behind). P0014 indicates the exhaust camshaft on Bank 1 is 'over-advanced' (too far ahead). Both point to issues with the VVT system for the exhaust cam on Bank 1, but describe different timing errors.
P0015 on Toyota Camry
On many Toyota Camry models, especially those with the 2.4L or 3.5L engines, P0015 is frequently caused by a faulty exhaust VVT solenoid (oil control valve) or issues related to engine oil sludge from infrequent oil changes. Checking oil condition and replacing the solenoid is a common fix.
Questions to Ask Your Mechanic
Did you check the engine oil level and condition before diagnosing the VVT system?
Good answer: Yes, that's always the first step. Low or dirty oil can directly cause VVT issues. Your oil was [level/condition].
What were the live data readings for the exhaust camshaft position and commanded position?
Good answer: I monitored the actual vs. desired cam angles. The actual exhaust cam position on Bank 1 was consistently lagging behind the commanded position, confirming the over-retarded condition.
Did you test the VVT solenoid's electrical resistance and operation?
Good answer: Yes, I tested the solenoid's resistance, and it was out of spec. I also applied power to it to check for proper plunger movement, and it was sticking.
Repair Cost Estimate
DIY Repair
Parts only
$50-$200
Shop Repair
Parts + labor
$150-$600
Save $100-$400 by doing it yourself
Difficulty
intermediate
Time
1-3 hours
Intermediate - While checking oil and replacing a VVT solenoid can be done by many DIYers, diagnosing deeper issues like a camshaft phaser or wiring requires a scan tool and more advanced mechanical skills.
Cost of Waiting
Ignoring P0015 leads to reduced fuel economy and engine performance. Continued incorrect valve timing can put stress on other engine components, potentially leading to premature wear of the timing chain or camshaft phaser. A $100 VVT solenoid fix now prevents a $1,000-$2,000 timing system repair later.
While You're In There...
The VVT system relies heavily on clean, fresh engine oil. If you're diagnosing or replacing VVT components, ensuring your oil and filter are new is a critical step and good preventative maintenance.
If accessing the camshaft phaser or certain VVT solenoids requires removing the valve cover, it's smart to replace the valve cover gasket to prevent future oil leaks, as it's already exposed.
Tools You'll Need
- Basic hand tools (sockets, wrenches)
- Multimeter
- Scan tool (to read codes and live data)
- Oil filter wrench (if changing oil)
- Torque wrench
P0015 is a common engine code related to your variable valve timing system. In many cases, it's a straightforward fix like an oil change or replacing an affordable solenoid, getting your engine running smoothly again.
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Your Next Steps
Step 1: Check your engine oil level and condition. If it's low or dirty, perform an oil change with the correct viscosity oil. Clear the code and drive to see if it returns.
Step 2: If the code returns, locate the exhaust VVT solenoid on Bank 1. Inspect its wiring and connector. Remove the solenoid and test its electrical resistance. If it's faulty or clogged, replace it.
Step 3: If the solenoid is good and the code persists, the issue is likely the camshaft phaser itself, or a deeper oil pressure/timing chain issue. This often requires more advanced diagnosis and potentially valve cover removal.