Fault code P0267 – a step-by-step guide to diagnosing and fixing it

Error code P0267 is displayed and the check engine light is on - what does this mean?

DTC P0267 is recognized by the OBD/EOBD system when a problem is detected with the injection system of cylinder 3. This fault code indicates a defect in the fuel injection system, which can lead to uneven engine running.

What causes can this error code have?

• Defective injection valve cylinder 3
• Clogged injection valve due to contamination
• Damaged cable to the injection valve
• Loose plug connections on the injection valve
• Defective engine control unit (ECU)
• Corroded contacts in the wiring
• Fuel pressure problems
• Defective fuel pump
• Clogged fuel filter

What symptoms occur in parallel with fault code P0267?

• Engine running problems: rough idling and jerky engine
• Power loss: Noticeable reduction in engine power
• Starting problems: Difficulty starting the engine
• Increased fuel consumption: Significantly higher consumption than usual
• Exhaust problems: Black or white smoke from the exhaust
• Engine misfires: Particularly noticeable at low engine speeds

How can the problem with error code P0267 be rectified?

• Repairing error code P0267 requires a systematic approach to identify the cause.
• Replace injection valve cylinder 3: Replace the defective injection valve completely and replace the seals at the same time
• Clean the injection valve: Carry out professional ultrasonic cleaning of the clogged injection valve
• Repair the wiring: Locate damaged cables to the injection valve and repair or replace them professionally
• Check plug connections: Disconnect all plugs on the injection valve, clean and reconnect firmly
• Flush the fuel system: Completely clean the fuel system including lines and rail
• Replace fuel filter: Replace clogged fuel filter with a new filter
• Check fuel pump: Measure fuel pressure and replace fuel pump if necessary
• Test engine control unit: Check ECU for defects and replace or reprogram if necessary