Could an exhaust leak cause P0155?

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07-15-2007, 06:07 PM

Marc '99T/A

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Could an exhaust leak cause P0155?

I know I have a leak at the collectors on the passenger side; could this leak be causing this code?

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07-15-2007, 09:06 PM

Shallow Bay

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It could, especially if no DTC are being thrown by the driver side O2 sensor. With that said, I still feel the code is being set because the heater is not staying warm enough due to the LT's.

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07-16-2007, 07:35 AM

Marc '99T/A

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But everything was fine before the H/C install. Put everything back together and now this.

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07-16-2007, 12:15 PM

Shallow Bay

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Coincidence? Probably not... fix the leak and see where you stand.

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07-16-2007, 08:11 PM

Corvettekid82

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I have the very same issue.. threw the P0155 for the pass side and I have a leak on that collector as well. I dont know for sure if the two are related to eachother, but its hard to think its all coincidence.

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