what causes DTC's P0135 and P0155
Thread Starter
Staging Lane
Joined: Mar 2002
Posts: 88
Likes: 0
From: bay area, CA
what causes DTC's P0135 and P0155 i got these codes this morning when i started the car. I searched what they meant and it is a " Heated Oxygen Sensor Circuit " The crappy thing is that i recieved this code before for B1S1 and i replaced the O2 sensor thinkin it was bad after i did my header install, but now i got the code again but this time for both sides. Any clues as to what sets this code off?
