What is your question?
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What is your question?
engine light is on stay on code po158
What makes this problem better or worse?
no
How long has your 1999 GMC C1500 had this problem?
1hr
1 Reply
Bank 2 is the exhaust stream behind the bank 2 cylinders. Sensor 2 is the one after the catalytic converter. Is this the only code you are getting? If so, circuit testing to that sensor is needed, and if all looks good, the sensor may e needed, but it's hard to say without performing needed testing. www.repairpal.com/repair-shops