Demystifying the PO141 Code A Clear and Concise Explanation

The difference between code P0139 and P0141 is location of the O2 sensor. Anyone know which code refers to which O2 sensor? P0141 Oxygen sensors monitor the amount of oxygen in the exhaust so the engine computer (PCM) can adjust the fuel mixture to minimize emissions and maximize ... Code P0141 (O2 Sensor Heater Circuit Bank 1 Sensor 2) and Code 61-1 / 61-2 are reported from my check engine light OBD read. enginecodes #P0141code The P0141 engine code typically indicates an issue with the oxygen sensor, specifically the Bank 1 Sensor 2 oxygen ... Came back with a code PO141 Bank 1 Sensor 2. Can anyone tell me the location of this 02 Sensor and possibly provide a diagram. CEL: P0141 Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 2). Subscribe. Jul 24, 2009 | 01:23 PM. CometVR4's Avatar. CometVR4. The only code was the rear sensor. Replaced it and code changed to the heated circuit code, been only that one ever since. Disconnect the negative terminal on your battery for ten minutes. This will hopefully clear the codes and do a soft reset of the computer. The rear O2 sensor isn't used by the ECM for engine operation. It's function is to monitor the exhaust flow for excess O2 when the engine is running too rich ... P0141 is B1S2 heater malfuntion and the toyota part number is #89465-53200. I am sure as I've replaced this not too long ago and checked my ...