P2633
Fuel Pump B Control Circuit Low
P2633 is an OBD-II diagnostic trouble code meaning: Fuel Pump B Control Circuit Low. Common causes: fuel pump b malfunction, open or short circuit in wiring. Estimated repair cost: $33–167.
Symptoms
- The engine stalls or does not start
- Unstable engine operation
- Power reduction
- Increased fuel consumption
- Check Engine Light Is On
Causes
- Fuel pump B malfunction
- Open or short circuit in wiring
- Poor contact in connectors
- Fuel pump relay malfunction
- Problems with the engine control module (ECU)
How to Fix
- Check the voltage at the fuel pump B control circuit.
- Inspect wiring and connectors for damage
- Check the operation of the fuel pump relay
- Test fuel pump B
- If necessary, replace the fuel pump or relay
Related codes
Error P2633 by Vehicle Brand
FAQ
What does the P2633 code mean?
P2633 is an OBD-II diagnostic trouble code that indicates: Fuel Pump B Control Circuit Low
What causes a P2633 error code?
The most common causes of P2633 include: Fuel pump B malfunction; Open or short circuit in wiring; Poor contact in connectors; Fuel pump relay malfunction.
How do I fix a P2633 diagnostic trouble code?
To fix P2633: Check the voltage at the fuel pump B control circuit.. Inspect wiring and connectors for damage. Check the operation of the fuel pump relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2633?
Do not drive — repair immediately
How much does it cost to fix P2633?
The estimated repair cost for P2633 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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