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 (DTC) INDEX DTC: REAR DIFFERENTIAL CONTROL MODULE (RDCM) -- XJ/X351DIAGNOSTIC TROUBLE CODE (DTC) INDEX DTC: REAR DIFFERENTIAL CONTROL MODULE (RDCM)DESCRIPTION AND OPERATIONREAR DIFFERENTIAL CONTROL MODULE (RDCM)P2787-4B CLUTCH TEMPERATURE TOO HIGH - OVER TEMPERATUREPOSSIBLE CAUSES
2016 Jaguar XJR Base
Possible Causes
2016 Jaguar XJR BaseSECTION Possible Causes
NOTE:
If this DTC has logged together with a ROM error DTC (P0605-00), the ROM error is the likely root cause. Refer to the DTC helptext for DTC P0605-00 and rectify this fault first before proceeding further
- Rear differential locking motor internal temperature sensor (calculated from motor and oil temperature sensor values) value above 200°C
- Extensive prolonged rear wheel speed differential
- Rear differential oil temperature sensor circuit fault
- Rear differential locking motor temperature sensor circuit fault
- Insufficient oil quantity
- Incorrect oil specification
- Rear differential - Internal fault
- Rear differential control module - Internal failure
RENDER: 1.0x
NO RELATED
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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.