P0210: Fuel injector circuit fault on cylinder 10
Injector circuit malfunction, cylinder 10
Severity: Inspect soon
TroubleCodes.net says a faulty injector circuit can cause a misfire, stalling or a no-start, so get the car checked soon.
P0210 in short
P0210 means the engine computer found an electrical problem in the cylinder 10 fuel injector circuit. A failed injector, a wiring or connector fault, or a computer injector driver problem are the usual causes. It can cause a misfire, stalling or a no-start, so get it checked soon.
The engine computer switches each injector on and off. When it detects a fault in the cylinder 10 injector circuit, it stores P0210.
TroubleCodes.net lists three main culprits: the injector, the circuit wiring and the computer driver. Misfire codes often appear with it.
Most likely causes
These are general causes for this code across vehicles. None is specific to one make or model.
Cause 1: Failed fuel injector on cylinder 10
Common general cause- Why it ranks here
- TroubleCodes.net lists a failed injector first and gives resistance and balance tests to confirm.
- What would change this
- Rises if resistance is out of specification or the injector does not click. Falls if the injector tests good.
Cause 2: Fault in the injector wiring or connector
Common general cause- Why it ranks here
- TroubleCodes.net lists a fault in the injector circuit wiring as one of three main causes.
- What would change this
- Rises if a noid light does not flash while cranking or power is missing. Falls if the circuit is normal.
Cause 3: Engine computer injector driver fault
Possible — needs testing- Why it ranks here
- TroubleCodes.net lists a PCM problem, which is only likely once the injector and wiring are cleared.
- What would change this
- Rises if power and the injector are good but the control signal is missing.
What to test first
Start at step 1. Each result tells you what it means and where to go next.
Step 1: Read all stored codes and note any misfire codes (P0301-P0308) or other injector circuit codes.
IfSeveral injector codes are stored
It meansA shared wiring or computer fault is more likely.
IfOnly P0210 is stored
It meansCheck the cylinder 10 injector and wiring.
Step 2: Check the injector connector with a noid light while cranking, confirm battery voltage at the power pin, and measure injector resistance.
Warning:Fuel is flammable and the injector connector is next to the fuel rail; keep sparks and heat away and do not crank for long with the rail open.
IfNo flash or no power at the connector
It meansWiring or computer fault.
IfResistance is out of specification
It meansThe injector is suspect.
Symptoms
- Check engine light on
- Engine misfire
- Engine stalls or cranks but does not start
Compare with: Car shaking with the check engine light on
How to fix
Step 1: With the engine off and cool, check that the injector connectors are fully seated.
Parts and cost context
- Fuel injector:Test the injector and wiring before replacing parts. Labour varies; get a quote.
Labor varies by vehicle and shop; get a quote before you approve a repair.
Compare used part prices on PartPriceGuideOn your vehicle
We don't have reviewed vehicle-specific evidence for P0210 yet. The causes and tests above apply across vehicles.
Related codes
No curated relationships for P0210 yet.
Sources and review
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error