Cylinder 11 Injector A Circuit
What it means
P0211 means the ECM has detected an electrical fault in the fuel-injector control circuit for cylinder 11 (found on large V10 and V12 engines) — typically an open or short. With that injector not firing correctly, cylinder 11 misfires and the engine runs rough and down on power. It usually still starts, but a persistent misfire can damage the catalytic converter, so repair it soon.
Can I keep driving? Drivable but rough — cylinder 11 misfires and the engine loses some power; on a large engine it still starts, but extended driving risks catalytic-converter damage, so repair soon.
Common symptoms
What you'll notice
- Check-engine light on (may flash during an active misfire)
- Rough idle and misfire
- Reduced power and hesitation
- Increased fuel consumption
Common causes
Most likely first
- Faulty cylinder 11 fuel injectorLikely
- Open or short in the injector wiringCommon
- Corroded or loose injector connectorCommon
- Injector driver fault inside the ECM/PCMLess often
How to diagnose & fix
Work through it in order
- Scan and read freeze-frame data to confirm the cylinder 11 injector circuit fault.
- Inspect the injector connector and wiring for damage, corrosion, or an open circuit.
- Measure the injector's resistance against specification.
- Verify injector operation (swap-test with another cylinder if practical).
- Replace the injector if faulty, then clear and retest.
FAQ
Quick answers
Is it safe to drive with P0211?+
Can I just clear P0211?+
Related codes
Often seen with P0211
Read & clear P0211 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.