street_ruler

I have an accord with a bad o2 sensor and the code being thrown is for the secondary bank, so the rear sensor. is it a typical test to swap locations and see if the code moves thus isolating that its NOT wiring but the sensor it self?

r_holguin

You can get underneath your car and check wiring usually just the sensor they aren't that hard to replace.

s2000Junky

If you’re going to go to that trouble, I might just try cleaning it and putting it back in, might get some more life out of it if your on a budget. I'd say unless your off roading this car and you caught the wiring on something, or its 25+ years old, it likely not the wiring.

street_ruler

you know its a 35 dollar part on a car with 202K on it, and id bet the entire cars value (~11 dollars) that its never been replaced. its probably time

s2000Junky

Probably, for $35 id say go for it. You know how much they want for a Genuine Honda s2000 sensor? $350 each! Needless to say I installed a $80 universal one last go around.

street_ruler

i found the denso OEM part for 35.


here is the part that makes me think its a wiring issue. The CEL is supposedly for the heater element not coming up to temp fast enough in relation to the water temp. OR, if theres a short in the circuit it will throw the code. If this is the case, with the code cleared it should take a few minutes of idling unless its a short. In my case after clearing the code it pops up almost immediately after engine start. makes me think its a short rather than a heater issue.

ill look during the next oil change.

s2000Junky

That’s been my experience as well, so very well could be. Switching the sensors like you mentioned previously sounds like a logical way to test this, assuming they are the same sensors and will not trigger an additional code. But for $35, using a new one as part of the troubleshooting wouldn’t be the end of the world if it turned out to not be the sensor. Sounds like you have a few effective ways to go about resolving the issue. If it does turn out to be a bad connection somewhere, I hope it’s readily obvious. I hate wiring issues.

street_ruler

im willing to set the car on fire for a wiring issue.