Well its been some time and still the same problem...
can anyone point me how to fix this?
can anyone point me how to fix this?
The issue is an electrical one in the sensor. The O2 sensor itself it probably still working, given your emissions levels are still fine. The part that failed, is the heater circuit. That heater brings the O2 sensor up to operating temperatures - decreasing the time the "rise-time" for values to be kicked back to the ECM.Well its been some time and still the same problem...
can anyone point me how to fix this?
fish do you know where this sensor is located? and how would it be changed? thanksThe issue is an electrical one in the sensor. The O2 sensor itself it probably still working, given your emissions levels are still fine. The part that failed, is the heater circuit. That heater brings the O2 sensor up to operating temperatures - decreasing the time the "rise-time" for values to be kicked back to the ECM.
Since this is sensor #2 or the downstream sensor, the exhaust gases will heat the O2 sensor for operation - that's why the emissions are still OK. But if starting from a cold start, there will be some confusion in the ECM, since the downstream O2 sensor is not providing the expected signal, since it will take longer to warm up compared to a sensor with a working heater.
The downstream one primary function is to check on catalytic converter function - only the upstream one is used for air/fuel mixture control.
Chances are - the car will still be fine with the burned out heater on the downstream sensor. The problem is if there is a new problem and you ignore it because the CEL is constantly coming on. Recommendation is to replace the sensor, sure you can keep running on the one with a burned out heater, but it doesn't mean the sensor will stay good forever.
fish do you know where this sensor is located? and how would it be changed? thanks
The plug is exactly where my dead link picture shows it. I went cheap on the O2, wish I didn't, getting a P0141 now. I'll rehost the pics on my server later.It's behind the catatlytic converter. It's located about where the shifter is. The interior connector is PIA t replace properly, I bet a lot of mechanics cut and splice the sensor wiring in.