Error code

OBD2 P0018

OBD2P0018
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Crankshaft Position - Camshaft Position Correlation.

Severity

moderateCan drive, but performance issues may occur and should be addressed soon.

Summary

Code P0018 indicates a problem with the correlation between the crankshaft position and camshaft position sensor in bank 2 of the engine. This issue can affect how the engine manages fuel injection and ignition timing.

Symptoms

  • Engine runs poorly
  • Difficulty starting the engine
  • Check Engine Light is on

Common Causes

  • Faulty cam or crank sensor
  • Open or shorted circuit in the cam or crank sensor wiring
  • Timing belt/chain out of sync
  • Slipped or broken tone ring on cam or crankshaft
  • Problem with the Variable Valve Timing (VVT) system
  • Faulty Powertrain Control Module (PCM)

Diagnosis

  1. Visually inspect the sensors and connections for any obvious damage or loose wires.
  2. Test the sensor output using an ohmmeter or multimeter to check if it is producing a signal.
  3. Check the sensor circuits for proper voltage and continuity.
  4. Use an oscilloscope to test the synchronization between the crankshaft and camshaft sensors.

Fixes

  • Replace faulty sensors, repair wiring issues, or adjust timing components as needed.

FAQ

What does P0018 mean?

P0018 indicates a problem with the correlation between the crankshaft and camshaft position sensors in bank 2 of your engine.

How do I fix P0018?

Fixing P0018 typically involves replacing faulty sensors, repairing wiring issues, or adjusting timing components such as the timing belt/chain and tone rings.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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