WileECoyote wrote:Replaced the secondary O2 sensor, three rain sessions later and still no check engine lights have returned.
WileECoyote wrote:Seems as though Pontiac/Toyota have an issue with the other codes for the ECU and disabling the TCS system whenever anything triggers a code!
Glenpointe wrote:I have exactly the same problem with my 2009 with 2.4L engine 5sp automatic. I got caught in a heavy rain few days ago, and my check engine light turned on and my VSC off light flasing. However, the lights turned off the next day. It rained again last night and the same lights turned on today. It stored 2 codes. P0138 and P0607. I am baffled why does the O2 sensor trigger this code after rain? The only thing that I can think of is the O2 connector got wet and shorted out. And after you drive a car for while, it dries out and everything is OK. I bet the O2 is still good, but the connector seal is deteriorated overtime. Wondering if I can seal the connector or I need to replace the O2 sensor?
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