故障コード索引 · medium
P1237
Fuel pump secondary circuit - malfunction
Fuel pump secondary circuit - malfunction
Applies to: All X-TYPE variants, 2001-2009 (saloon & estate) · Confidence: Manufacturer code list + field-verified causes
Common causes
- Open/short in the pump secondary circuit
- Pump relay fault
Quick checks
- Scan access: Jaguar-specific: WDS/IDS or a Jaguar-capable scan tool
- Prefer official/field-verified path before guessing sensors
Typical fixes
- Check the pump relay and secondary wiring
- Replace as required