TeXJ Posted October 31, 2007 Share Posted October 31, 2007 Great site you all have here. Glad that I found it. I have a 97 es300, with about 100k miles on it. I have received the codes p0125 and p0155. P0155 is saying bank2 sensor 1, so I replaced the o2 sensor behind the cat. Then I cleared the codes with my code reader. After about a few minutes of driving the check engine light came back on and was reading a p0125 code. So then I drove some more and sure enough, the code p0155 popped back up. I'm lost at what this could be. I searched on this site and google and I couldn't find anything to do with p0155. The code p0125 seems to be a code that is tripped due to the impending malfunction of a o2 sensor. any help would be appreciated. thanks Quote Link to comment Share on other sites More sharing options...
gordonw Posted October 31, 2007 Share Posted October 31, 2007 You replaced the wrong sensor. Bank 2 Sensor 1 is in front of the engine. Its in the front engine manifold. Quote Link to comment Share on other sites More sharing options...
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