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Home >> Jeep >> 2008 >> Compass Limited, AWD, Automatic CVT >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0617 To P1128 >> P1128-Closed Loop Fueling Not Achieved - Bank 1 >> Possible Causes

Possible Causes

Possible Causes 
INTERMITTENT DTC
FUEL DELIVERY SYSTEM
ECT SENSOR, WIRING, OR CONNECTORS
MAP SENSOR, WIRING, OR CONNECTORS
O2 SENSOR, WIRING, OR CONNECTORS
ENGINE MECHANICAL SYSTEM
POWERTRAIN CONTROL MODULE (PCM)

Perform PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .