P0210
Cylinder 10 Injector A Circuit
Fuel injector circuit
Generic OBD-II
High
What it means
P0210 means the ECM has detected an electrical fault in the fuel injector circuit for cylinder 10 — an open, short, or out-of-range resistance. Without a proper drive signal, cylinder 10 gets no fuel and misfires, so the engine runs rough and down on power. It usually still runs on the remaining cylinders (this code is seen on V10 and V12 engines).
High
Can I keep driving? Limited — cylinder 10 may not be firing, so the engine runs rough and misfires; keep driving to a minimum to protect the catalytic converter.
Common symptoms
What you'll notice
- Check-engine light on (may flash during a misfire)
- Rough idle and a noticeable misfire
- Reduced power and hesitation
- Increased fuel consumption or a fuel smell
Common causes
Most likely first
- Open or shorted injector wiring to cylinder 10Likely
- Corroded or loose injector connectorCommon
- Failed cylinder 10 fuel injector (open or shorted coil)Common
- Fault in the ECM's injector driverLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame and confirm the fault is on the cylinder 10 injector circuit.
- Measure the injector's coil resistance and compare it to the other injectors.
- Inspect the injector connector and wiring for damage, corrosion, or an open.
- Swap the suspect injector with a neighbouring cylinder to see if the fault follows it.
- Repair the wiring or replace the injector; clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0210?+
Not for long. A dead cylinder makes the engine misfire, and unburned fuel can overheat and damage the catalytic converter. Get it fixed promptly.
Can I just clear P0210?+
It returns quickly if the injector or its wiring is faulty — the circuit fault has to be repaired.
Related codes
Often seen with P0210
Read & clear P0210 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX