P2151
Fuel Injector Group B Supply Voltage Circuit High
P2151 is an OBD-II diagnostic trouble code meaning: Fuel Injector Group B Supply Voltage Circuit High. Common causes: open or short circuit in the group b injector circuit, faulty fuel pump relay. Estimated repair cost: $6–56.
Symptoms
- Unstable engine operation
- Increased fuel consumption
- Difficulty starting the engine
- Power Loss
- Check Engine Light Is On
Causes
- Open or short circuit in the group B injector circuit
- Faulty fuel pump relay
- Problems with the injector wiring harness
- Malfunction of the engine control unit (ECU)
- Poor contacts in the injector circuit connectors
How to Fix
- Check the integrity of the power supply circuit for group B injectors
- Check fuel pump relay
- Inspect the wiring harness for damage
- Check the contacts in the injector and ECU connectors
- If necessary, replace faulty components
Related codes
Error P2151 by Vehicle Brand
FAQ
What does the P2151 code mean?
P2151 is an OBD-II diagnostic trouble code that indicates: Fuel Injector Group B Supply Voltage Circuit High
What causes a P2151 error code?
The most common causes of P2151 include: Open or short circuit in the group B injector circuit; Faulty fuel pump relay; Problems with the injector wiring harness; Malfunction of the engine control unit (ECU).
How do I fix a P2151 diagnostic trouble code?
To fix P2151: Check the integrity of the power supply circuit for group B injectors. Check fuel pump relay. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2151?
Limited driving only, diagnose soon
How much does it cost to fix P2151?
The estimated repair cost for P2151 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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