P21E4
Cylinder 5 Injector B Circuit Low
P21E4 is an OBD-II diagnostic trouble code meaning: Cylinder 5 Injector B Circuit Low. Common causes: short circuit in the injector circuit, cylinder 5 injector malfunction. Estimated repair cost: $33–167.
Symptoms
- Rough engine operation
- Increased fuel consumption
- Misfire in cylinder 5
- Loss of engine power
- Check Engine Light Is On
Causes
- Short circuit in the injector circuit
- Cylinder 5 injector malfunction
- Damage to electrical wiring
- Problems with injector connectors
- Engine control unit malfunction
How to Fix
- Check the resistance of the injector of cylinder 5
- Inspect the injector wiring and connectors for damage.
- Check the condition of the fuses
- If necessary, replace the injector
- Check the operating parameters of the engine control unit
Related codes
Error P21E4 by Vehicle Brand
FAQ
What does the P21E4 code mean?
P21E4 is an OBD-II diagnostic trouble code that indicates: Cylinder 5 Injector B Circuit Low
What causes a P21E4 error code?
The most common causes of P21E4 include: Short circuit in the injector circuit; Cylinder 5 injector malfunction; Damage to electrical wiring; Problems with injector connectors.
How do I fix a P21E4 diagnostic trouble code?
To fix P21E4: Check the resistance of the injector of cylinder 5. Inspect the injector wiring and connectors for damage.. Check the condition of the fuses. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P21E4?
Limited driving only, diagnose soon
How much does it cost to fix P21E4?
The estimated repair cost for P21E4 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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