P033D

Symptoms

• Reduced engine power
• Increased fuel consumption
• Unstable idling
• Check Engine Light Illuminates

Causes

• Knock sensor fault D
• Wiring harness damage
• Short circuit in the circuit
• Problems with the electronic control unit (ECU)

How to Fix

1. Check the integrity of the wiring harness and connectors of the knock sensor D
2. Measure the resistance of the knock sensor D, compare with the manufacturer's specifications
3. Check for short circuit in the circuit
4. If necessary, replace knock sensor D
5. Clear error memory and test drive

Related codes

Error P033D by Vehicle Brand