P21D5
Cylinder 7 Injector B Circuit/Open
P21D5 is an OBD-II diagnostic trouble code meaning: Cylinder 7 Injector B Circuit/Open. Common causes: open or short circuit in the injector circuit, cylinder 7 injector malfunction. Estimated repair cost: $17–89.
Symptoms
- The engine runs rough
- Power Loss
- Increased fuel consumption
- Misfire in cylinder 7
- Check Engine Light Is On
Causes
- Open or short circuit in the injector circuit
- Cylinder 7 injector malfunction
- Connector problems or contact corrosion
- Engine control unit malfunction
- Wiring harness damage
How to Fix
- Check the resistance of the injector of cylinder 7
- Inspect connectors and wires for damage
- Check the voltage in the injector control circuit
- If necessary, replace the injector
- Check the operation of the engine control unit
Related codes
Error P21D5 by Vehicle Brand
FAQ
What does the P21D5 code mean?
P21D5 is an OBD-II diagnostic trouble code that indicates: Cylinder 7 Injector B Circuit/Open
What causes a P21D5 error code?
The most common causes of P21D5 include: Open or short circuit in the injector circuit; Cylinder 7 injector malfunction; Connector problems or contact corrosion; Engine control unit malfunction.
How do I fix a P21D5 diagnostic trouble code?
To fix P21D5: Check the resistance of the injector of cylinder 7. Inspect connectors and wires for damage. Check the voltage in the injector control circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P21D5?
Limited driving only, diagnose soon
How much does it cost to fix P21D5?
The estimated repair cost for P21D5 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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