Error code

OBD2 P0368

OBD2P0368
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Camshaft Position Sensor 'B' Circuit High.

Severity

moderateYou can drive, but performance will be poor and fuel efficiency may decrease.

Summary

P0368 indicates that the camshaft position sensor B circuit on bank 1 of your engine is reading high input voltage.

Symptoms

  • Hesitation upon acceleration
  • General lack of engine performance
  • Diminished fuel efficiency
  • Overheated catalytic converter due to timing issues
  • Spark detonation (backfire) when decelerating
  • Spark knock (pinging) when accelerating

Common Causes

  • Defective camshaft sensor or crankshaft sensor
  • Open or shorted wiring to the camshaft sensor
  • Corroded or fluid-soaked connector/camshaft sensor
  • Faulty PCM or PCM programming error

Diagnosis

  1. Perform a visual inspection of all system-related wiring harnesses and connectors.
  2. Test the camshaft sensor for voltage and ground signals using a digital volt/ohmmeter (DVOM).
  3. Check resistance values at the camshaft sensor connector.
  4. Use an oscilloscope to observe waveform patterns from the camshaft position sensor.

Fixes

  • Replace defective camshaft or crankshaft sensor if necessary.
  • Repair or replace open/shorted wiring and connectors as needed.

FAQ

What does P0368 mean?

P0368 indicates a high input voltage issue with the camshaft position sensor B circuit on bank 1 of your engine.

How do I diagnose P0368?

Diagnose by checking wiring, connectors, and sensors for issues such as corrosion or fluid damage. Use a DVOM to test voltage and resistance values, and an oscilloscope to check waveform patterns.

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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