Motor is throwing some engine codes
Thread Starter
Burning Brakes
Joined: Dec 2004
Posts: 1,047
Likes: 207
From: Columbus Ohio
Motor is throwing some engine codes
Decided to check what was going on with the check engine light today with my car and I came up with these 2 current codes….
PO153= H02S Slow Response
P1133- HO2S=Insufficient Switching Bank/ Sensor one
Now I have a 383 stroker motor with a moded stock TI exhaust running without cats. It doesn’t seem like it’s anything major to worry about but should I invest in mill eliminators of some sort so the engine doesn’t throw any codes? Or is that not even the problem?
PO153= H02S Slow Response
P1133- HO2S=Insufficient Switching Bank/ Sensor one
Now I have a 383 stroker motor with a moded stock TI exhaust running without cats. It doesn’t seem like it’s anything major to worry about but should I invest in mill eliminators of some sort so the engine doesn’t throw any codes? Or is that not even the problem?
Instructor
Joined: Apr 2008
Posts: 245
Likes: 2
From: melbourne florida
Same problem here,ls6 w/ lg headers ,no cats...po153 which usually means either defective o2 sensor, an exhaust leak or defective wiring to the o2 itself. I plan on having mine tuned shortly,will see what they say. By the way,po153 is passenger front o2 in the header 
