P21F0
Cylinder 11 Injector B Circuit Low
P21F0 is an OBD-II diagnostic trouble code meaning: Cylinder 11 Injector B Circuit Low. Common causes: cylinder 11 injector malfunction, open or short circuit in the injector control circuit. Estimated repair cost: $17–89.
Symptoms
- Unstable engine operation
- Power dips
- Increased fuel consumption
- Check Engine Light Is On
- Possible misfires
Causes
- Cylinder 11 injector malfunction
- Open or short circuit in the injector control circuit
- Poor contact in the injector connector
- Problems with the engine control unit
- Corroded or damaged wiring
How to Fix
- Check the resistance of the injector of cylinder 11
- Inspect wiring and connectors for damage
- Check the voltage in the injector circuit
- If necessary, replace the injector
- Check the performance of the ECU
Related codes
Error P21F0 by Vehicle Brand
FAQ
What does the P21F0 code mean?
P21F0 is an OBD-II diagnostic trouble code that indicates: Cylinder 11 Injector B Circuit Low
What causes a P21F0 error code?
The most common causes of P21F0 include: Cylinder 11 injector malfunction; Open or short circuit in the injector control circuit; Poor contact in the injector connector; Problems with the engine control unit.
How do I fix a P21F0 diagnostic trouble code?
To fix P21F0: Check the resistance of the injector of cylinder 11. Inspect wiring and connectors for damage. Check the voltage in the injector circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P21F0?
Limited driving only, diagnose soon
How much does it cost to fix P21F0?
The estimated repair cost for P21F0 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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