P1233 – Fuel Pump Disabled by Inertia Switch
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Symptoms
- No start
- Engine stalls after impact
- Crank no start
- Check engine light
- Fuel pump inoperative
Causes
- Inertia switch tripped
- Faulty inertia switch
- Wiring issue
- Loose connector
- Control module logic
Diagnosis
- Check inertia switch position
- Reset switch if tripped
- Inspect wiring
- Check power at pump
- Scan for related codes
Repair
- Reset inertia switch
- Replace faulty switch
- Repair wiring
- Secure connectors
- Clear codes and road test