1997 Chevrolet Cavalier Q&A
1997 Chevrolet Cavalier Question: PO141
The OBD II Code P0141 means Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2). "Is set when the Rear Oxygen Sensor does not show signal activity indicative of closed loop fuel system operation within the required time." For more information please go here; http://repairpal.com/obd-ii-code-p0141 - fernando
My check engine light is on, code PO141 O2 Sensor. Replaced the one at the front of the engine, check engine light still on, code PO14...
This is what came back from my engine light coming on and being diagnosed.