H82 - Check For Crossed HO2S Harness Connector

- Key Off.

Heated Oxygen Sensor Codes:

- Disconnect the HO2S that corresponds to the DTCs.

- Activate KOER Self-Test.

- Is a corresponding HO2S HTR fault code generated?

NOTE: Disregard any codes other than HO2S HTR codes.

YES -- DTCs correspond to correct HO2S location indicating HO2S are not crossed. GO to H83. H83 - Check Exhaust System For Leaks

NO -- CHECK for crossed HO2S and wiring. REFER to schematic for correct HO2S pin location. COMPLETE a HO2S Monitor Drive Cycle. Monitors, Trips, Drive Cycles and Readiness Codes