REPLACE 02 SENSOR BANK 1 SENSOR 1. SAME CODE KEEP ON COMING EVERY YEAR
SOURCE: MIL light on
P0139 Secondary Heated Oxygen Sensor (Secondary HO2S) (Sensor 2) Slow Response This is the Catalytic Converter efficiency monitor, it is reporting that the Cat Conv is not working as it should (cleaning up the exhaust), how many miles on the car?
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