What it means
The fuel injection pump control system reports a generic fault on metering channel F (cam, rotor, or injector path). Fuel delivery to the affected channel cannot be regulated as expected.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
- The engine or gearbox may go into limp mode
How it works
The injection pump meters fuel through channel F, which may refer to a cam, rotor, or injector path depending on the system. The control module monitors that channel’s operation and sets this code when it detects a general fault, without identifying a specific low, high, or range condition.
Common causes
Most likely first.
- Metering element drift with wear
- Wiring or connector fault
Symptoms
- Check-engine light
- Rough running or hesitation
- Reduced engine power
- Hard starting
How to diagnose it
- Record freeze-frame data and check live data for channel F to see when the fault occurs and whether fuel delivery or engine speed changes at the same time.
- Inspect channel F wiring and connectors for damage, loose pins, corrosion, or poor seating, since an intermittent connection can disrupt metering.
- Compare channel F readings or actuator response with the manufacturer's specification and with other available metering channels.
- Check the channel F control circuit for continuity and shorts, following the vehicle wiring diagram and isolating components as specified by the manufacturer.
- If wiring checks pass, test the channel F metering element for wear or inconsistent operation using the manufacturer's procedure.
Common fixes
- Repair damaged wiring or secure a loose channel F connector.
- Clean or repair corroded connector terminals.
- Replace a failed section of the channel F control circuit.
- Replace the worn or faulty channel F metering element if testing confirms it.
Can I keep driving?
Drive only as needed if the engine runs smoothly and responds normally; avoid heavy loads because power may drop or the engine may hesitate. Stop if it becomes difficult to control or repeatedly stalls, since fuel delivery may worsen.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.