What it means
The control module monitors injection timing performance for cylinder 2. It sets this code when injection timing is more retarded than the allowed range.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
The injection control system meters fuel through the injector for cylinder 2, and the control module monitors whether its timing response follows the commanded timing. This code sets when cylinder 2 injection is more delayed than allowed, indicating a possible injector or injection control fault.
Common causes
Most likely first.
- Injector or injection control fault
How to diagnose it
- Review freeze-frame data and cylinder-specific live data for roughness or timing deviation to verify that the fault is associated with cylinder 2.
- Inspect the cylinder 2 injector connector and wiring for loose terminals, corrosion, or visible damage.
- Check for related misfire or injector circuit codes that could point to a cylinder 2 wiring or control problem.
- Test the cylinder 2 injector circuit and control response using the vehicle manufacturer's specified procedure.
- If the circuit passes, assess cylinder 2 injector operation and fuel delivery against the manufacturer's specifications.
Common fixes
- Reconnect a loose cylinder 2 injector connector and secure its wiring.
- Clean or repair corroded terminals in the cylinder 2 injector connector.
- Repair damaged wiring in the cylinder 2 injector circuit.
- Clean or replace a confirmed faulty cylinder 2 injector.
- Repair a confirmed injector control or driver circuit fault.
Can I keep driving?
If the engine runs smoothly, limit driving and avoid heavy acceleration because delayed cylinder 2 fueling may cause rough running or power loss. Stop if it misfires severely, stalls, or cannot maintain safe speed.
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.