Question about 2001 Jeep Grand Cherokee

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CO2 regulator Enige light on took to dealer and said that it was CO2 regulator, and that is the second time being replace and the dealer told em that I'm not the only person with that problem on the jeeps of this year.

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Your car has a couple o2 sensors are you sure its the same one both times

Posted on Oct 07, 2009


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Oil pressure light comes on for about 20 seconds and rarely ? took it to dealer and was told they could not get it to warn or flash was told just to go ahead and drive it 2007 montee carlo 3500 engine

I wouldn't have any problem replacing the oil pressure switch to see if that takes care of the issue. Many time it will.

I’m happy to assist further over the phone at

Jul 23, 2012 | Cars & Trucks

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The airbag light stays on and the temperature and compass display on the rearview mirror won't work.

2003 Chevy Silverado
our rearview mirror has gone off and the airbag light stays on.
i've determined that this is a fuse, the SIR fuse under the hood, but what I can't figure out is why it's blowing.
It's either something to do with when we hook up the lights to the trailer or it might be from where we installed a new car stereo.
I took it to the Chevy dealer for some other things and told them there was a fuse blown to the rearview mirror and to the airbag and just asked them to replace the fuse while it was in the shop.
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Dec 28, 2011 | 2003 Chevrolet Silverado 1500

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I took my 89 mighty max to get smogged. It wouldn't pass for a few reasons. Co2 emissions were outrageously high and also there was no check engine light? Does an 89 mighty max have a check engine light? I...

not sure about engine light as i dont think it has one at this age but the CO2 is caused by either a O2 sensor of which you will only have one in front of the cat or the cat as well is past its sell by date ,Test the O2 sensor with a automotive meter for readings and continuety in the heater circuit ,but as a rule i change both at the same time as a four wire sensor is not a lot of money ,well a universal one isnt anyway and make sure the air filter is clean ,if they argue about the engine check light then go to dealer and ask for a copy of the certificate of homoglonation as this will state if it has a light or not

Mar 07, 2011 | 1989 Mitsubishi Mighty Max

1 Answer

I have an /05 Highlander. A new short block was installed @ 74,000 mi. A week later my VSC light came on. The dealer replaced the O2 sensor & light went out..for 4 miles. Now both the eng. & VSC...

The VSC has nothing to do with the O2 Sensor,TPS Sensor or EGR Valve.

I will not express what I'am thinking,but in reality,NO Diagnostic work was done
on your vehicle.

My advice,and I don't know why the pros aren't all over me yet,is never go to a dealer.
You and thousands of others on this site alone,are perfect examples of why you
go down the street, to a local repair shop that cares.
I bet if you checked your in & out milage, that they are the same. Never road
tested,nothing,just threw parts at it at your expense.
There are good techs at dealers,but no service Mgrs that care,it is all about
taking your money and selling services you don't need. On the 5th visit they will
make the drivability repair you went there for.

Common sense: asumming they pulled codes
you never have multiple sensor failures all at one time.

Nov 29, 2010 | 2005 Toyota Highlander

2 Answers

The engine light stays on in my 2000 town and country. When the light first came on it shifted into second gear and would not come out of it. Upon reading the manual I realized that this is a safety...

Sounds like a bad connector to me. Pull the connector off the sensor and look at the terminals. Do the holes look bigger than the pins? If yes, maybe you can use a paper clip or small screwdriver to close the terminals a bit so they will grip the pins tighter. Also check the wires on the connector for fraying or thinness. You may need to replace the wiring all the way back to the computer to fix this problem. Let me know if you have questions. Your sensor looks like this:

Oct 18, 2010 | 2000 Chrysler Town & Country

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My check engine light is on had the OBD checked and stated a temperature problem autozone suggested to check coolant level first then replace the temperature sensor where is it located?

I had the exact same problem on my 2003 Trailblazer. The check engine light came on, I took my vehicle to autozone and they told me the code was P0495 (cooling fan speed high)but they did't know how to fix the problem.
I called the dealer and they told me that it would cost me $89.00 to reprogram my PCM. I took my vehicle to the dealer and now my trailblazer is working like new. I hope it's that simple, the other thing also that could have gone bad would be the relay to your electric fan. The relay is a not like a normal relay but is more like a module that can regulate the speed of the electric fan which a tech2 scanner can determine if it's bad or not. Good luck
Thank you for using fixya.

Apr 22, 2010 | 2004 Chevrolet TrailBlazer

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Ihave a 2001 honda odyssey and i took it to the dealer ship because ihad aproblem with one of my doors and I had a bad motor mount they fix it and then the next day I took it back because it was runing bad...

They had a issue with the egr ports clogging up in the intake manifold,it can cause all kinds of oddball symptoms.BUT it should be covered under emissions 8yr/80,000miles warranty chck with honda dealer and get a little frisky if its outside time/milage waranty a little pushing sometimes gets em to cave and cover the repair

Nov 07, 2009 | 2001 Honda Odyssey

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I have a 2001 Santa Fe and the Engine light is lit and has been for many years. When I took the vehicle for the State Inspection I was told that the Co2 needed to be changed so the light would come off and...

The best thing to do is go to Auto Zone and get your Hyundai scanned for a DTC code. That would tell us which O2 sensor has gone bad. You have three O2 sensors and one of them has gone bad, the O2 sensor sends signals to the ecm to control the air fuel mixture so it will not run to rich or to lean which is causing you to fail the state inspection. Good luck and keep me posted on what the DTC codes are, be glad to help.

Jun 25, 2009 | 2001 Hyundai Santa Fe

1 Answer

Chech enige light on trac off vcs all these are on

I had the same lights turned on in my vehicle. I took my car to the dealer since it was still under warranty. The code that they got was p00012 and they replaced Normal 0 CAM TIMING GEAR. It took them 3 days to replace this part since they needed to special order it. Like the previous comment says, have it scan before replacing parts.

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Headlights on 2001 Grand Caravan

we have same problem with our 2001 DCSport. Need some type of control module for headlight. 300 used 600 used.

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