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P0012moderate severityPowertrain

Intake Camshaft Position Timing Over-Retarded Bank 1

on 2007 Mercedes-Benz S65 AMG 6.0L V12 BiTurbo M275 · RWD

What this code means

The intake camshaft timing for Bank 1 is more retarded than the PCM commanded position.

Symptoms

  • Check Engine Light
  • Loss of power
  • Poor acceleration
  • Rough idle

Common causes

  • VVT solenoid failure
  • Low oil pressure
  • Oil passage blockage
  • Timing chain wear

Diagnostic steps

  1. Check oil level and condition
  2. Test VVT solenoid
  3. Check oil pressure
  4. Monitor cam timing with scan tool

Repair notes

Replace VVT solenoid or clean oil passages.

Other Powertrain codes on this vehicle

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