P03FC

Symptoms

• Misfires
• Unstable engine operation
• Power reduction
• Increased fuel consumption
• Check Engine Light Illuminates

Causes

• Faulty ignition coil K
• Open or short circuit in wiring harness
• Poor contact in the ignition coil connector
• Engine control unit (ECU) malfunction
• Corrosion or oxidation of contacts

How to Fix

1. Check the condition of the ignition coil K
2. Check the wiring harness for breaks or damage
3. Clean the contacts in the ignition coil connector
4. Check voltage and resistance in control circuit
5. Replace the faulty coil or wiring harness
6. If necessary, replace the engine control unit

Related codes

Error P03FC by Vehicle Brand