What it means
The cylinder 2 alternative-fuel injector control circuit has a range or performance fault. The code does not specify current ramp, dwell, peak voltage, or a particular cause.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
The cylinder 2 alternative-fuel injector and its drive circuit control secondary fuel delivery to that cylinder on a bi-fuel vehicle. The control module sets this code when circuit behavior falls outside the expected range, but the code does not identify a particular voltage, current pattern, or failed part.
Common causes
Most likely first.
- Alternative-fuel injector fault
- Wiring or connector fault
- Control-module driver fault
Symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
How to diagnose it
- Review freeze-frame data and cylinder-specific misfire counts, noting whether the fault appeared during alternative-fuel operation.
- Inspect the cylinder 2 injector, connector, and harness for damage, corrosion, loose terminals, or poor routing.
- Check injector winding and drive-circuit continuity against the manufacturer's procedure.
- Compare cylinder 2 injector command and circuit behavior with another cylinder only where the manufacturer's diagnostic procedure allows it.
- If the injector and harness pass, test the module driver and connections using the manufacturer's specified checks.
Common fixes
- Repair a loose, corroded, or damaged cylinder 2 injector connector.
- Repair damaged wiring or poor connections in the cylinder 2 drive circuit.
- Replace the cylinder 2 alternative-fuel injector if testing confirms it is faulty.
- Repair the control-module driver circuit if the manufacturer's tests identify it as the cause.
Can I keep driving?
If cylinder 2 runs rough on alternative fuel, switch to the vehicle's other fuel if permitted and avoid hard acceleration; misfires can damage the catalytic converter. Stop driving if the misfire is severe or the engine runs poorly on both fuels.
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.