P0014 on Mercedes-Benz
Exhaust Camshaft Position Timing - Over-Advanced (Bank 1)
P0014 on Mercedes-Benz vehicles indicates exhaust camshaft position timing - over-advanced (bank 1). Au7o has documented this code across 1 Mercedes-Benz model — most commonly on SL-Class. P0014 means the exhaust camshaft on bank 1 is timed too far advanced — the variable valve timing (VVT) system has moved the cam beyond the position the computer commanded, or it's stuck in an over-advanced position. The engine uses VVT to rotate the camshaft and optimize valve timing for power, economy, and emissions; the computer compares the commanded cam position to the actual reading from the cam sensor and flags this code when they don't agree. Common results are rough idle, reduced power, poor fuel economy, or a rattle at start-up. Oil flow and the VVT actuator are the usual suspects. Typical repair costs on Mercedes-Benz range from $2,000 to $5,000, depending on the specific model and root cause.
Common Causes of P0014
- •Low or dirty engine oil restricting VVT operation
- •Stuck or failed camshaft oil control valve (VVT solenoid)
- •Clogged VVT solenoid screen or oil passages
- •Faulty camshaft phaser/actuator
- •Wiring or connector fault at the oil control valve
- •Stretched timing chain or jumped timing
- •Camshaft position sensor fault giving incorrect reading
P0014 on Mercedes-Benz by Model
Mercedes-Benz SL-Class(1 issue)
- Timing Chain Variator Noise on M276/M278 Engines2013-2020
The R231 SL with M276 V6 or M278 V8 engines develops a distinctive rattling noise from the timing chain area on cold starts. The cam adjuster magnets (variators) lose oil pressure overnight, allowing the chains to slap against the guides until oil pressure builds. This noise worsens over time and can eventually lead to stretched chains and timing issues.
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What does P0014 mean on Mercedes-Benz?▼
P0014 stands for "Exhaust Camshaft Position Timing - Over-Advanced (Bank 1)." P0014 means the exhaust camshaft on bank 1 is timed too far advanced — the variable valve timing (VVT) system has moved the cam beyond the position the computer commanded, or it's stuck in an over-advanced position. The engine uses VVT to rotate the camshaft and optimize valve timing for power, economy, and emissions; the computer compares the commanded cam position to the actual reading from the cam sensor and flags this code when they don't agree. Common results are rough idle, reduced power, poor fuel economy, or a rattle at start-up. Oil flow and the VVT actuator are the usual suspects. On Mercedes-Benz specifically, this code is documented across 1 model.
What causes P0014 on Mercedes-Benz vehicles?▼
Common causes on Mercedes-Benz: Low or dirty engine oil restricting VVT operation, Stuck or failed camshaft oil control valve (VVT solenoid), Clogged VVT solenoid screen or oil passages, Faulty camshaft phaser/actuator, Wiring or connector fault at the oil control valve. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0014 on a Mercedes-Benz?▼
Repair costs on Mercedes-Benz range from $2,000 to $5,000, depending on the specific model and root cause.
Which Mercedes-Benz models have P0014 documented?▼
Au7o has documented P0014 on 1 Mercedes-Benz model: SL-Class.