What it means
Injection timing performance for cylinder 10 is more advanced than the expected range.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
The engine control module monitors injection timing performance for cylinder 10 and compares its injector response with the commanded timing. This code sets when cylinder 10's injection event is detected earlier than the allowed range, possibly due to injector behavior, the control circuit, or fuel delivery.
Common causes
Most likely first.
- Injector wear, sticking, or restricted flow
- Fault in cylinder 10 injector wiring or connector
- Injector driver or control circuit fault
- Fuel pressure or delivery problem affecting injector response
Symptoms
- Check engine light on
- Rough idle or vibration
- Reduced power or uneven acceleration
- Increased fuel consumption
How to diagnose it
- Save freeze-frame data and review cylinder 10 injector or timing information to find the conditions when the event went over advanced.
- Inspect the cylinder 10 injector connector and harness for corrosion, loose pins, chafing, heat damage, or fuel leakage.
- Compare cylinder 10 injector response and contribution with other cylinders using available scan-tool functions.
- Test the cylinder 10 injector wiring and control circuit for opens, shorts, or poor connections using the manufacturer's procedure.
- If electrical checks pass, assess the injector for sticking or restricted flow and check fuel pressure and delivery against the manufacturer's specification.
Common fixes
- Repair damaged or loose cylinder 10 injector wiring or connector.
- Correct fuel pressure or supply if it is outside the manufacturer's specification.
- Clean or replace a sticking or restricted cylinder 10 injector.
- Repair a confirmed cylinder 10 injector driver or control-circuit fault.
Can I keep driving?
If the engine remains smooth and the warning light is steady, limit driving and avoid hard acceleration or heavy loads. Stop if it runs roughly, loses power, or the light flashes, since incorrect fueling can damage emissions-control equipment.
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.