P03CF

Symptoms

• Check Engine light on
• Unstable or harsh engine sound
• Intermittent knocking noises when accelerating
• Loss of engine power (due to ECU protection limitation)
• Increased fuel consumption

Causes

• Unstable fuel supply to the injector of cylinder 6 (stuck injector)
• Detonation in cylinder 6 due to incorrect mixture
• Uneven operation of the ignition system
• Problems with the fuel pressure regulator
• Contamination of the intake tract or valves of cylinder 6

How to Fix

1. Check the injector of cylinder 6 - inspect the spray, check for sticking
2. Check the pressure in the fuel system and the operation of the pressure regulator
3. Diagnose the ignition system of cylinder 6 (spark plug, coil)
4. Inspect the intake valve and combustion chamber for carbon deposits
5. Read real-time data and compare pressure variation between cylinders
6. Eliminate the identified cause, reset the codes and conduct a test drive

Related codes

Error P03CF by Vehicle Brand