Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJAGUAR2016XJR BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXDIAGNOSTIC TROUBLE CODE INDEX DTC: ENGINE CONTROL MODULE (ECM) V8 5.0L PETROL/V8 S/C 5.0L PETROL -- XJ/X351DIAGNOSTIC TROUBLE CODE (DTC) INDEX DTC: V8 5.0L PETROL/V8 S/C 5.0L PETROL, POWERTRAIN CONTROL MODULE (PCM)DESCRIPTION AND OPERATIONPOWERTRAIN CONTROL MODULE (PCM) - 5.0L PETROLP023C-12 CHARGE AIR COOLER COOLANT PUMP CONTROL CIRCUIT HIGH - CIRCUIT SHORT TO BATTERYACTION
2016 Jaguar XJR Base
P023C-12 Charge Air Cooler Coolant Pump Control Circuit High - Circuit short to battery: Action
2016 Jaguar XJR BaseSECTION Action
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Refer to the appropriate SYSTEM WIRING DIAGRAMS information and check air charge coolant pump relay circuit for short circuit to power
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest
- Check and install a new air charge coolant pump relay as required
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.