P021B
Cylinder 8 Injection Timing
P021B is an OBD-II diagnostic trouble code meaning: Cylinder 8 Injection Timing. Common causes: malfunction of the fuel injector of cylinder 8, problems with the injector wiring harness. Estimated repair cost: $56–167.
Symptoms
- Unstable engine operation
- Power reduction
- Increased fuel consumption
- Misfire in cylinder 8
Causes
- Malfunction of the fuel injector of cylinder 8
- Problems with the injector wiring harness
- ECU malfunction
- Mechanical problems in the cylinder (wear, scoring)
How to Fix
- Check the condition of the fuel injector of cylinder 8
- Check the integrity of the wiring harness and connectors
- Check resistance and operation of the injector
- Test control signals from the ECU
- If necessary, replace the nozzle or repair the wiring
Related codes
Error P021B by Vehicle Brand
FAQ
What does the P021B code mean?
P021B is an OBD-II diagnostic trouble code that indicates: Cylinder 8 Injection Timing
What causes a P021B error code?
The most common causes of P021B include: Malfunction of the fuel injector of cylinder 8; Problems with the injector wiring harness; ECU malfunction; Mechanical problems in the cylinder (wear, scoring).
How do I fix a P021B diagnostic trouble code?
To fix P021B: Check the condition of the fuel injector of cylinder 8. Check the integrity of the wiring harness and connectors. Check resistance and operation of the injector. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P021B?
Limited driving only, diagnose soon
How much does it cost to fix P021B?
The estimated repair cost for P021B is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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