P21DA
Cylinder 12 Injector B Circuit/Open
P21DA is an OBD-II diagnostic trouble code meaning: Cylinder 12 Injector B Circuit/Open. Common causes: open or short circuit in the injector control circuit, poor contact in the injector connector. Estimated repair cost: $28–89.
Symptoms
- Unstable engine idling
- Reduced engine power
- Increased fuel consumption
- Misfire in cylinder 12
- Check Engine Light Is On
Causes
- Open or short circuit in the injector control circuit
- Poor contact in the injector connector
- Malfunction of the injector itself
- Wiring Harness Problems
- Engine control unit (ECU) malfunction
How to Fix
- Check the integrity of the injector control circuit
- Inspect the injector connectors for oxidation or damage.
- Check injector resistance
- If necessary, replace the injector
- Check the operation of the engine control unit
Related codes
Error P21DA by Vehicle Brand
FAQ
What does the P21DA code mean?
P21DA is an OBD-II diagnostic trouble code that indicates: Cylinder 12 Injector B Circuit/Open
What causes a P21DA error code?
The most common causes of P21DA include: Open or short circuit in the injector control circuit; Poor contact in the injector connector; Malfunction of the injector itself; Wiring Harness Problems.
How do I fix a P21DA diagnostic trouble code?
To fix P21DA: Check the integrity of the injector control circuit. Inspect the injector connectors for oxidation or damage.. Check injector resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P21DA?
Yes, but get it checked soon
How much does it cost to fix P21DA?
The estimated repair cost for P21DA is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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