P1123 Jaguar Long Term Fuel Trim Adjustment Bank 1 System Too Rich

P1123 Jaguar Long Term Fuel Trim Adjustment Bank 1 System Too Rich

Possible causes
– Faulty HO2S
– Faulty Mass Air Flow Sensor
– High fuel pressure
– Canister purge solenoid stuck open
– HO2S harness is open or shorted
– HO2S circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
Jaguar Vehicle:Jaguar S-Type,Jaguar XF,Jaguar XJ,Jaguar XK,Jaguar XK-Series,Jaguar X-Type
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