O2 sensor problem
#1
O2 sensor problem
I have an 01 yukon that had the codes p1133 & p1153. I installed 2 new sensors for b1 s1 and b2 s1. The 1153 code went away but the 1133 reappeared. So I took the new sensor back and got another one, installed and reset codes. Now both codes are back. I cleaned the mas and throttle body but the codes reappeared again. I don't think there is any exhaust leaks. Any ideas. Also checked for vacuum leaks and are ok.
#4
Retired
Just to be safe, you changed out the upstream sensors and not the down stream correct?
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Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
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