Car Questions
RepairPal is your advocate for car care advice and guidance

Check Engine light is on.

(2004 Chevrolet Malibu)
in Rumney, NH on September 25, 2011
I replaced the entire exhaust system from the cat back this spring and replaced both o2 sernsors. Check engine light is still on???
Displaying 1 answers & 2 comments
Popular Answer
on September 25, 2011
what code??

on September 25, 2011
p0133 and p0135
on September 25, 2011
the heaters for the sensors are controlled by a fuse. you need to check it. it may have been one of the sensors that had a bad heater and you fixed it with replacing the bad one. look for the fuse first. if it is ok, then there is another issue. stop replacing parts till you have someone tell you the problem. it gets expensive replacing parts that are not bad.

RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide. Learn more
Didn't find what you were looking for?