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 MANUALSJAGUAR2011XJ L SUPERCHARGEDREPAIR AND DIAGNOSISELECTRICALFUSES & CIRCUIT BREAKERSDIAGNOSTIC TROUBLE CODE: CENTRAL JUNCTION BOX (CJB) -- XJ/X351DIAGNOSTIC TROUBLE CODE (DTC) INDEX DTC: CENTRAL JUNCTION BOX (CJB)DESCRIPTION AND OPERATIONCENTRAL JUNCTION BOX (CJB)DTC B1B56-46: SUNROOF MODULE - CALIBRATION/PARAMETER MEMORY FAILUREACTION
2011 Jaguar XJ L Supercharged
DTC B1B56-46: Sunroof Module - Calibration/parameter memory failure: Action
2011 Jaguar XJ L SuperchargedSECTION Action
- Using the manufacturer approved diagnostic system, perform routine - Calibrate Sunroof (0x2039). Clear the DTCs and retest. If the fault persists, install a new roof opening panel control module
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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.