Engine

P0367 — Camshaft Position Sensor B Circuit Low Input

Severity: medium Drive with care, to a shop

What P0367 means

The engine control module watches the signal voltage from camshaft position sensor B and compares it with the crankshaft sensor to work out valve timing. With P0367, that signal voltage is lower than expected. The cause can be the sensor itself, an open or grounded wire, a poor connector, or rarely a fault in the ECM.

Symptoms

  • Check Engine light on
  • Rough or unstable idle
  • Loss of power or hesitation
  • Hard starting
  • Stalling
  • Engine running in limp mode

Possible causes

  1. Failed camshaft position sensor B
  2. Damaged, corroded or grounded wiring in the sensor circuit
  3. Corroded or loose connector at the sensor
  4. Missing sensor power or a poor ground
  5. Camshaft timing off (stretched chain, jumped belt) distorting the signal
  6. ECM input circuit failure (rare)

How to diagnose

  1. Scan for codes and freeze frame data, and note any crankshaft or other cam sensor codes
  2. Inspect the sensor, connector and harness for chafing, oil, corrosion and broken locks
  3. Check sensor power and ground at the connector with a multimeter, following the wiring diagram for your engine
  4. Test the signal wire for opens and shorts to ground
  5. Check the sensor signal with a scope or scan tool while cranking
  6. Compare cam and crank signals and confirm correct valve timing
  7. If wiring and sensor are good, test the ECM and check for software updates

Common fixes

  • Replace camshaft position sensor B
  • Repair or replace the damaged wiring or connector
  • Restore the sensor power and ground
  • Correct the engine timing: replace the chain, belt or tensioners
  • Repair or reprogram the ECM

Questions and answers

Can I drive with a P0367 code?

Only for a short distance and with care. The engine may stall or fail to restart, so get it diagnosed soon.

What most often causes P0367?

Usually the camshaft sensor itself or damaged wiring and connectors. Inspect the harness and check sensor power and ground before replacing the sensor.

Will the code clear after replacing the sensor?

The light often goes out after several normal drive cycles, but it is best to clear the code with a scan tool. If it returns, look at the wiring or the ECM.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.