Hi,

We have a 2003 Honda Accord EX 4 Door Auto Non-California with VIN series _CM5_. It was throwing a P0141 error which shows as Oxygen Sensor Bank 1 Sensor 2 which is shown as the sensor after the catalytic converter.

I pulled that sensor out and as per the diagnostics, checked the resistance across the black / gray wires on it (it is a 4 wire sensor) and there was absolutely no resistance at all. That would pin point the sensor as defective and I then replaced it with a Walker OE unit that came with all the connectors, auto body gaskets and cable pre-made which fit perfectly. The Walker part number was 250-24476 which shows as replacing Honda / Acura part numbers 36532-RAA-A01 and 36532-RAD-L11.

With the original sensor, if the battery was disconnected the check engine light would come back on within 2 or 3 seconds after the car was started. After I replaced it with the Walker sensor, the light stayed off during 10 minutes of idling. However, once we started driving the car, the light comes back on after 3 to 10 minutes of driving every time we reset it. It is still showing the same error as P0141. I checked the new sensor and I do have resistance of between 8.8 and 17.6 depending if it is totally cool to rather hot after the car has been running.

The only error I have seen is the P0141 and it did not change after the sensor was replaced. It just takes longer to come up now with the new sensor.

Does anyone possible have an idea why it would be throwing the same error after a sensor that tested defective was replaced? I am stumped at this point.

Thanks in advance!

 

why are you doing any work yourself ?? car is still under warranty is it not ?? emission components have a warranty of at least 50,000,, miles some even more ,, call your local dealer

 

The car has about 34k miles on it. I started by calling the dealer and they told me it is out of warranty. They insisted the only emissions parts with longer warranties are the ECU, Cat and one other piece. It was not the O2 sensors though. I forget what it was. Hmm. Anyway, they insisted it would not be covered by Honda since the car is over 36 months / 36k miles.