P21E2
Cylinder 4 Injector B Circuit Low
P21E2 is an OBD-II diagnostic trouble code meaning: Cylinder 4 Injector B Circuit Low. Common causes: cylinder 4 injector malfunction, open or short circuit in wiring harness. Estimated repair cost: $17–67.
Symptoms
- Unstable engine operation
- Misfire in cylinder 4
- Increased fuel consumption
- Check Engine Light Illuminates
- Reduced engine power
Causes
- Cylinder 4 injector malfunction
- Open or short circuit in wiring harness
- Poor contact in the injector connector
- Malfunction of the control module (ECU)
- Contact corrosion
How to Fix
- Check the resistance of the injector of cylinder 4
- Inspect the wiring harness and connectors for damage.
- Check the voltage in the injector circuit
- If necessary, replace the injector
- Clean contacts from corrosion
Related codes
Error P21E2 by Vehicle Brand
FAQ
What does the P21E2 code mean?
P21E2 is an OBD-II diagnostic trouble code that indicates: Cylinder 4 Injector B Circuit Low
What causes a P21E2 error code?
The most common causes of P21E2 include: Cylinder 4 injector malfunction; Open or short circuit in wiring harness; Poor contact in the injector connector; Malfunction of the control module (ECU).
How do I fix a P21E2 diagnostic trouble code?
To fix P21E2: Check the resistance of the injector of cylinder 4. Inspect the wiring harness 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 P21E2?
Yes, but get it checked soon
How much does it cost to fix P21E2?
The estimated repair cost for P21E2 is $17–67. Actual cost depends on your vehicle, location, and labor rates.
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