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Evaluating display group 36, display zone 2 - Diagnosis of Oxygen Sensor (O2S) after Three Way Catalytic Converter (TWC)

Appears on display

Possible cause

Corrective action

Oxygen Sensor (O2S) after Three Way Catalytic Converter (TWC) not OK.: "B1 P2 n.OK.

DTC stored in DTC memory

Check DTC memory → DTC memory, checking and erasing , DTC memory, checking and erasing

Oxygen Sensor (O2S) after Three Way Catalytic Converter (TWC) faulty

Perform a road test to remove possible contaminates on Oxygen Sensor (O2S) and repeat check.
Perform diagnosis again if result is same:

Check Oxygen Sensor (O2S) and Oxygen Sensor (O2S) control after Three Way Catalytic Converter (TWC) → Oxygen Sensor (O2S) and Oxygen Sensor control after Three Way Catalytic Converter (TWC), checking