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Mystery lean codes & Rear main seal
Posted to Technical Discussion Forum on 8/19/2026

Hey everybody, this Jaguar drove me nuts! Our customer returned the next day after we replaced his leaking cam covers complaining of a check engine light. We found lean codes both banks. LT fuel trim was around +25% both banks. We started the car the next morn... Login to read more.

 

car Vehicle Data

2012 Jaguar XKR 5.0L Mil Lamp On

Engine5.0 L
Trans6-speed Automatic (Electronic)
SymptomsMil Lamp On

car Vehicle Data

2012 Jaguar XKR 5.0L Mil Lamp On

Engine5.0 L
Trans6-speed Automatic (Electronic)
SymptomsMil Lamp On