P2634
Fuel Pump B Control Circuit High
P2634 is an OBD-II diagnostic trouble code meaning: Fuel Pump B Control Circuit High. Common causes: short circuit in the pump control circuit to +12v, faulty fuel pump relay. Estimated repair cost: $17–89.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Problems starting the engine
- Unstable engine operation at high speeds
- Increased fuel consumption
Causes
- Short circuit in the pump control circuit to +12V
- Faulty fuel pump relay
- Wiring harness damage
- Problems with the engine control unit
- Malfunction of the fuel pump itself B
How to Fix
- Check fuel system fuses and relays
- Inspect the wiring harness for damage
- Check the resistance of the pump control circuit
- Test the operation of fuel pump B
- If necessary, replace faulty components
Related codes
Error P2634 by Vehicle Brand
FAQ
What does the P2634 code mean?
P2634 is an OBD-II diagnostic trouble code that indicates: Fuel Pump B Control Circuit High
What causes a P2634 error code?
The most common causes of P2634 include: Short circuit in the pump control circuit to +12V; Faulty fuel pump relay; Wiring harness damage; Problems with the engine control unit.
How do I fix a P2634 diagnostic trouble code?
To fix P2634: Check fuel system fuses and relays. Inspect the wiring harness for damage. Check the resistance of the pump control circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2634?
Limited driving only, diagnose soon
How much does it cost to fix P2634?
The estimated repair cost for P2634 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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