P0031 Replaced Sensor Still Problems

[njcamryowner2007]

About six weeks ago, the 'check engine' light and the VSC lights came on (2007 Camry 6 cyl.) I checked the engine code and it was throwing a P0031 - Heater Circut not functioning for O2 sensor Bank 1 Sensor 1. OK, I ordered up a new Denso sensor but before I could install it the lights went out (and stayed out for a week). The lights came back on so I installed the new sensor, cleared the codes but am still getting the P0031.

For giggles, I checked the resistance on the old sensor and they were well within spec. (didn't need to spend the $140 for the new sensor.) So now I am trying to determine what is causing the problem. Could it be the ECM and is there some way to test it? What else could causing the problem. Any thoughts about purchasing an ECM from a junk yard as new ones cost almost $1,000?

Suggestions are much appreciated.

[gdanaher]

I think that if you find a wrecked car with the ecm intact, the guy is likely to know the value of that ecm, so, no you aren't going to buy it unless your pockets are that deep, in which case you wouldn't be posting here... Anyway, since you could check the resistance of the one sensor against the standard value, do the same to the other sensors. One might be relying on another to work properly. If you find a bad sensor then you need to replace it anyway.

Of course full mouse and keyboard recordings are supported, with new enhanced reliability thanks to Macro Magic's "relative playback" feature, which can keep track of which applications you interact with while recording and play the recording back *relative* to those windows - no matter where they are later positioned on the screen.With the ignition switched on, check the voltage at the sensor wire connection. There might be an in-line fuse iun there, so you want to verify that you have voltage and ground.