P034A

Symptoms

• Difficulty starting the engine
• Unstable engine idling
• Dips during acceleration
• Possible engine stop

Causes

• Malfunction of the crankshaft position sensor
• Damage to the ring gear on the flywheel/damper
• Problems with sensor wiring or connectors
• Incorrect ignition timing setting
• Timing belt/chain slippage

How to Fix

1. Check the condition of the crankshaft position sensor and its fastening
2. Inspect the ring gear on the flywheel/damper for damage
3. Check the wiring and connectors of the sensor for breaks and oxidation
4. Check that the valve timing is set correctly
5. If necessary, replace the crankshaft position sensor

Related codes

Error P034A by Vehicle Brand