P34B4

Symptoms

• Check Engine light comes on
• Reduced engine power
• Increased fuel consumption
• Unstable engine idling
• Problems starting the engine

Causes

• Faulty camshaft actuator temperature sensor
• Open or short circuit in the sensor circuit
• Poor contact in the sensor connector
• Wiring harness damage
• Engine control unit malfunction

How to Fix

1. Check the continuity of the temperature sensor circuit
2. Inspect the connectors and contacts of the sensor
3. Check the resistance of the temperature sensor
4. Replace the actuator temperature sensor if necessary
5. Check and, if necessary, replace the camshaft actuator

Related codes

Error P34B4 by Vehicle Brand