P0367

What it means

P0367 means the engine control unit has seen the signal from camshaft position sensor B on bank 1 sitting too low (near zero volts) for longer than it should. Sensor B is usually the exhaust camshaft sensor, but the exact labelling varies by engine. The fault points to a wiring, power, earth or sensor problem rather than a mechanical timing fault, although the two can produce similar symptoms.

Symptoms

• Engine management light on
• Long cranking or intermittent no-start
• Rough running or misfiring
• Loss of power or poor acceleration
• Engine stalling or cutting out
• Car running in limp mode or with reduced variable valve timing function

Possible causes

• Faulty camshaft position sensor Blikely
• Damaged, chafed or oil-soaked wiring, or a short to earth in the signal circuitlikely
• Corroded, loose or contaminated connector terminals at the sensor or control unitlikely
• Open circuit or fault in the sensor's power supply or reference voltage feedpossible
• Damaged or incorrectly fitted reluctor or trigger wheel, or sensor air gap out of positionpossible
• Camshaft timing out of correct position due to a stretched chain or belt slipping a toothrare
• Faulty engine control unitrare

How to diagnose

1. Read all stored and pending codes and note the freeze frame data, including engine speed, temperature and load when the fault set
2. Look for related codes such as other camshaft or crankshaft sensor faults, which can point to a shared supply or earth problem
3. Inspect the sensor, its wiring and the connector for oil contamination, chafing, heat damage, corrosion and poor terminal tension
4. Check the sensor is fitted securely and its mounting and any seal are intact
5. Using the manufacturer's wiring diagram, test the sensor's supply voltage and earth at the connector with the ignition on
6. Check the signal wire for a short to earth and for continuity back to the control unit with the battery disconnected, following the manufacturer's procedure
7. View the live sensor signal during cranking and running with a scope or suitable scan data and compare it with the crankshaft signal
8. If signals look wrong, inspect the trigger wheel and check cam timing correlation as per the model's procedure

How to fix

• Repair or replace damaged wiring and fix any short to earth or open circuit
• Clean, repair or replace corroded or loose connector terminals
• Replace the camshaft position sensor B if it fails testing, then clear the code and confirm it does not return
• Restore the correct supply or earth feed if a fault is found in that circuit
• Replace a damaged trigger wheel and correct the camshaft timing if a mechanical fault is confirmed
• Have the control unit tested and replaced or repaired only if all wiring and sensor checks pass

Can I keep driving?

Nearby codes

• P0366GenericCamshaft Position Sensor B Circuit Range/Performance Bank 1
• P0368GenericCamshaft Position Sensor B Circuit High Bank 1