P1345 — Definitions depend on the manufacturer

P1345: Definitions depend on the manufacturer — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

SGC (Cam Position) Sensor Circuit Malfunction/ Crankshaft Position - Camshaft Position Correlation. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Powertrain

Symptoms

  • Illuminated Check Engine light
  • Engine misfires or rough idling
  • Poor engine performance and loss of power
  • Increased fuel consumption
  • Hard starting or engine stalling

Possible causes

  • Stretched or jumped timing chain/belt
  • Faulty camshaft or crankshaft position sensor
  • Damaged or corroded sensor wiring and connectors
  • Defective Variable Valve Timing (VVT) solenoid or actuator
  • Incorrect mechanical timing alignment after repair

What to check

  • Inspect the timing belt or chain for slack, wear, or skipped teeth
  • Test the crankshaft and camshaft position sensor circuits for continuity and voltage
  • Examine the sensor connectors for signs of corrosion or pin damage
  • Verify the mechanical synchronization between the crankshaft and camshaft
  • Check the VVT oil control valve and solenoid operation

Also written as: P1345-00, P134500 (some scan tools add the fault-type byte, e.g. -00).