Check Engine Code

P0012

"A" Camshaft Position — Timing Over-Retarded (Bank 1)

Severity: medium DIY difficulty: 2/5 Typical cost: $0–$500

What P0012 means

Opposite of P0011: the Bank 1 intake camshaft is retarded relative to commanded. Same root causes — typically dirty oil or a sticking VVT solenoid.

Symptoms

  • Check engine light
  • Rough idle
  • Reduced power
  • Possible misfire codes

Likely causes (most common first)

  1. Dirty or low engine oil (try this first)
  2. Failed VVT solenoid
  3. Clogged oil control valve screen
  4. Worn cam phaser
  5. Stretched timing chain

Can I keep driving?

Medium — drivable but fix soon

Typical repair cost

DIY fixes can start near $0 (parts only). Shop repairs for P0012 typically run up to $500 depending on the underlying cause and vehicle. Start with the most common cause — Dirty or low engine oil (try this first) — before throwing parts at it.

Related codes

P0010P0011P0013P0014

Confirm P0012 yourself in 60 seconds

AXLY.pro is a free iPhone app that pairs with any Bluetooth OBD2 adapter to read P0012 and every other stored code, plus live engine data. No subscription.

Download AXLY.pro Free Browse all codes