P1253 – Fuel Pump B Control Circuit
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Symptoms
- No start
- Intermittent stall
- Loss of power
- Long crank time
- Check engine light
Causes
- Open circuit
- Short circuit
- Relay fault
- Wiring damage
- Control module issue
Diagnosis
- Check wiring continuity
- Inspect relay
- Check power and ground
- Measure pump current
- Scan for related codes
Repair
- Repair wiring
- Replace relay
- Replace fuel pump B
- Repair control module
- Secure harness