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Home >> Jeep >> 2021 >> Cherokee Trailhawk >> Repair and Diagnosis >> Engine Performance >> System >> 3.2L - DTCS P054C To P1129 >> DTC Troubleshooting >> P1128-Closed Loop Fueling Not Achieved - Bank 1 Upstream >> Notes

P1128-Closed Loop Fueling Not Achieved - Bank 1 Upstream: Notes

For a complete CATALYST MONITOR SYSTEM wiring diagram, refer to the appropriate Wiring Information  .