P0014: Camshaft Position B - Timing Over-Advanced or System Performance (Bank 1)

P0014 means the engine control unit has detected that the B (exhaust) camshaft on bank 1 is timed more advanced than the unit commanded. Variable valve timing runs on engine oil pressure, so the most common cause is simply low, dirty, or wrong-viscosity oil starving the cam phaser. After oil, the usual suspects are the camshaft oil control valve (also called the VVT solenoid) clogging up, then the cam phaser or actuator itself, and finally a stretched timing chain. Start with the cheapest, most likely cause - check the oil before buying any parts.

P0014 is a emissions-related diagnostic trouble code classified as moderate severity. When your vehicle's ECU detects this condition, it stores P0014 and illuminates the check engine light.

If your vehicle has triggered P0014, you may notice one or more of these symptoms:

• Check engine light on, sometimes with a flashing light if a misfire is also present
• Rough or unstable idle, especially just after a cold start
• Noticeable drop in fuel economy
• Hesitation, surging, or reduced power under acceleration
• Occasional rattle from the timing cover area for a second or two at startup
• Hard starting on some engines when the cam phaser cannot return to its rest position

Here are the most common causes of P0014, ranked by how likely they are to be the culprit:

Generally yes, for short-term driving. P0014 does not usually leave you stranded, but treat it as a fix-soon job. The exhaust camshaft is sitting more advanced than the engine control unit asked for, which can cause rough running, a misfire, and worse fuel economy. Driving on it for weeks risks more expensive damage to the variable valve timing parts or, in the worst case, a stretched timing chain. The check engine light will also fail any EU inspection (TÜV, ITV, TA, SKP, MOT) until it is cleared.

Follow these steps to pinpoint the root cause of P0014:

1. Check the engine oil first. Pull the dipstick and confirm the level is correct and the oil is clean, not black and gritty. Variable valve timing runs entirely on oil pressure, so low or sludged oil is the single most common cause of P0014. If the oil is overdue or the wrong grade, change it and the filter before doing anything else, then clear the code
2. Scan for related codes. P0014 often appears alongside P0010, P0011, P0013, P0021, or P0024. Reading the full set tells you whether the problem is on one cam, one bank, or affecting the whole timing system, which narrows down whether you are chasing a solenoid or a chain
3. Inspect and test the camshaft oil control valve (VVT solenoid). Unplug it, check the connector and wiring for damage, then remove it and look at the screen filter and plunger. A solenoid caked with sludge is a frequent cause. Clean it with brake cleaner or replace it, refit, and clear the code
4. Command the variable valve timing actuator with a bidirectional scan tool. Watch the actual cam timing follow the commanded value. If the cam overshoots or will not hold position with a known-good solenoid and clean oil, the cam phaser itself is worn
5. Inspect the cam phaser and timing chain. Listen for a startup rattle and check chain stretch against the manufacturer spec. A stretched chain shifts cam timing and can set P0014 even when the solenoid and phaser are fine. This is the last and most expensive item to confirm

Repair costs for P0014 vary depending on the root cause and your vehicle. Here are typical estimates:

P0014 behaves differently depending on your vehicle. Select your car below for model-specific causes, known issues, and adjusted cost estimates:

These codes are often seen alongside P0014 or indicate related issues: