P21D0
Cylinder 2 Injector B Circuit/Open
P21D0 is an OBD-II diagnostic trouble code meaning: Cylinder 2 Injector B Circuit/Open. Common causes: broken injector control circuit wires, cylinder 2 injector malfunction. Estimated repair cost: $17–89.
Symptoms
- Unstable engine operation
- Misfire in cylinder 2
- Increased fuel consumption
- Difficulty starting the engine
- Check Engine Light Is On
Causes
- Broken injector control circuit wires
- Cylinder 2 injector malfunction
- Short circuit in the circuit
- Poor contact in the injector connector
- Malfunction of the injector driver in the ECU
How to Fix
- Check the integrity of the injector control circuit wires
- Measure the resistance of the injector of cylinder 2
- Check the contacts of the injector connector
- Check the presence of a control signal from the ECU
- If necessary, replace the injector
Related codes
Error P21D0 by Vehicle Brand
FAQ
What does the P21D0 code mean?
P21D0 is an OBD-II diagnostic trouble code that indicates: Cylinder 2 Injector B Circuit/Open
What causes a P21D0 error code?
The most common causes of P21D0 include: Broken injector control circuit wires; Cylinder 2 injector malfunction; Short circuit in the circuit; Poor contact in the injector connector.
How do I fix a P21D0 diagnostic trouble code?
To fix P21D0: Check the integrity of the injector control circuit wires. Measure the resistance of the injector of cylinder 2. Check the contacts of the injector connector. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P21D0?
Limited driving only, diagnose soon
How much does it cost to fix P21D0?
The estimated repair cost for P21D0 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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