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If the light is on, you still have a problem, at least according to OBDII. Do you have another oxygen sensor on the passenger side?
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You're reading My 01 chevy suburban check engine light came on. The code was P0135 so I replaced the upstream o2 sensor on the drivers side. The light is still on but it runs fine. Will the light go off or should I just erase the code?
Comments
The code specifically indicated that it was the left cylinder bank upstream sensor. The code scanner still reads the same code P0135. It could be the wiring.
by clivetheman on October 29th, 2009
I got it working. It was the wiring.
by clivetheman on November 3rd, 2009
Good going. You were right.
by mailpup on November 3rd, 2009