I just took my car to AutoZone because the check engine light was on. Their computer said i needed a new O2 sensor. I bought it and installed, but the check engine light is still on.
I go back to AutoZone and ask for another test. The guy there tells me to disconnect NEG. battery cable for a few seconds and it should clear. I did that and my lights still on. So I go back inside and another guy tells me it will clear after 50 turns on the ignition key.
Its this right?
2006-07-04 11:00:13 · 5 answers · asked by HoyBaboy 1 in Cars & Transportation ➔ Maintenance & Repairs
OK I disconnect battery for 5 minutes. But that didnt work. I was driveing to a reapir shop to get it checked out. But on the way there(about 2 miles) the check engine.light finally goes out. I was reading up on O2 sensors and it says they have a operating temp. of 600 degrees? Maybe I read it wrong but either it finally reached operating temp. or my computer reset itself...either case I'm happy camper now. thanks all!
2006-07-08 04:36:36 · update #1
take it to your dealer or to a automotive repair shop,just ask to clear the code and nuthin else,most of the time they wont even charge ya.
2006-07-04 11:05:34 · answer #1 · answered by strange_busaman 3 · 0⤊ 0⤋
Automotive computers (ECM / PCM) don't tell you they have a bad O2 sensor --They point to a circuit or area to diagnose. A plugged fuel filter , vacuum leaks, Bad MAP, bad MAF , wiring 02 heater power for example can set an "02" code. It is very passable you do but that is an assumption. without proper testing
While MOST cars the codes can be cleared by battery disconnection( it is a good place to start) some can not .
If you clear the code and the light and it comes back on for the same reason you may have other problems .
Of course if the car is OBD II or OBD I it will make a difference of what I am saying. I am stating a very general overview of your question.
2006-07-04 19:23:45 · answer #2 · answered by littlethimble2003 1 · 0⤊ 0⤋
If the check engine light comes on again after you have succeeded in clearing it, the new sensor was most likely not
installed tightly enough. Excess air is getting into the exaust
here, so the sensor tells the light to turn on. Your car has an
on board computer that can tell you whatever is malfunctioning.
All you need is a tech. manual that can tell you where to find it,
and define the codes for you.
2006-07-04 18:24:32 · answer #3 · answered by rusty math 5 · 0⤊ 0⤋
Disconnect the battery for 3 minutes. The computer will store memory for about two minutes without power.
2006-07-04 18:04:36 · answer #4 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋
Correct. You must have a newer car.
The computer stores that code. Disconnecting the
battery no longer works, thanks EPA.
Clearing the code with a scan tool will work.
2006-07-04 19:09:24 · answer #5 · answered by rjm96 4 · 0⤊ 0⤋