Diagnostic Aids
Check front HO2S heater circuits for intermittent faults. If front HO2S heater circuits are okay, replace front HO2S. If DTC cannot be duplicated, check scan tool FAILURE RECORDS to determine mileage since last DTC was set.
Check front HO2S heater circuits for intermittent faults. If front HO2S heater circuits are okay, replace front HO2S. If DTC cannot be duplicated, check scan tool FAILURE RECORDS to determine mileage since last DTC was set.