Home › Jaguar › 2014 › XF Base › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Engine Control Module (ECM) GTDI 2.0L Petrol -- XF/X250 › Diagnostic Trouble Code (DTC) Index DTC: GTDI 2.0L Petrol DTC: Engine Control Module (ECM) › Description And Operation › P2237-01: O2 Sensor Positive Current Control Circuit/Open - Bank 1, Sensor 1 - General electrical failure › Possible Causes