P2C31

Symptoms

• Misfire in one of the cylinders
• Unstable engine idling
• Reduced engine power
• Increased fuel consumption
• Check Engine light comes on

Causes

• Blown coil primary fuse
• Short circuit in the primary circuit
• Ignition coil malfunction
• Damaged wiring or poor contact
• Ignition coil relay problems

How to Fix

1. Check the condition of the primary circuit fuse of coil B
2. Inspect the ignition coil wiring and connectors
3. Check the resistance of the primary winding of the coil
4. Replace a faulty fuse or ignition coil
5. Check the operation of the ignition coil relay

Related codes

Error P2C31 by Vehicle Brand