Question about 1994 Cadillac DeVille

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Who can tell me the code on a 1994 cadilac po58

Problems with wiring or computers

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P0058 HO2S Heater Control Circuit High (Bank 2 Sensor 2)
Has something to do with your relay. I have searched through all my manuals and cannot find anything else about it. But you will need to replace a O2 sensor

Posted on Feb 10, 2009

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There is a POO58 code which is: HO2S Heater Control Circuit High (Bank 2 Sensor 2)

Posted on Feb 10, 2009

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1 Answer

Need wiring diagram for 1994 cadilac sts cooling fan


I am sorry but fixya has no wiring diagrams. Try this link. www.alldatadiy.com

Apr 21, 2013 | Cars & Trucks

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I had to have cadilac converter taken off car, I have a code that says Map Sensor and 02 sensor..is this due to the converter missing now? and does that affect the performance of the car in anyway?


The codes your car are throwing up and important codes to get fixed. The O2 sensor code is there because the cadilac converter was removed. The O2 sensor measure the amount of oxygen present in the exhaust both before the cadilac converter and after. When the measurments are the same the computer knows the cadilac converter is not working properly and it turns on the Check Engine Light. This code in itself will not effect the performance of the vehicle in any way OTHER then emissions. This is bad for the environment and if you live in a place that requires emission testing you will fail and eventually your resignation will be revoked making it illegal to drive that vehicle. It is illegal for a shop to remove the cadilac converter without replacing it so I recommend you avoid that shop in the future. There is a $10,000 fine if they are caught **** this.

The code for the MAP (Manifold Absolute Pressure) is completely unrelated but this code WILL effect the fueling and thus performance (both power and fuel economy) of the vehicle. The computer uses this sensor to get an idea of how much vacuum or suction the engine is using to pull fresh air into the combustion changer and then decided how much fuel to add. Its important that the proper amount of fuel be added to keep your engine running well. I highly recommend either doing some testing yourself or have a shop address this issue. MAP sensor are quite cheap and easy to replace. If you are not good with a multimeter then I would just replace the MAP sensor and see if it goes away. If you feel up to it you can check the resistance and continuity of the wires connecting the MAP sensor to the PCM. If you would like I can provide you with step by step instructions and wiring diagrams as well as pin out so you can test this. Good luck and thank you.

~Kyle~

Aug 16, 2012 | 1999 Pontiac Grand Am

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Lights out in the panel of on my 1994 fleetwood cadilac i already check fuses inside car all ok, how can i get the lights back on


TAKE OFF INSTRUMENT CLUSTER PANAL dISCONNECT ANY WIRE TO THE BACK OF CLUSTER IF NECESSARY TO TAKE OUT INST CLUSTER & REPLACE LIGHT BULBS IF THE WIRING CIRCUIT TO THE PANEL CHECKS OUT OK

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I have a cadilac sedan deville 1994 and every time i turn it on it says that i have to wait 3 minutes due to theft system starting disable why is that?


It is having a hard time reading your chip in your key. I have the same problem on my 99. You can get them replaced but there not cheap.

Nov 20, 2010 | 1994 Cadillac DeVille

1 Answer

I am having a problem with my gas is misxing with my oil but thear is no smore from exaust.my trans only goes to first gear.1994 cadilac 4.9liter


change the shift solinoids. buy a compresson tester at autozone and check for worn piston rings and blown gaskets . the kit should include directions on how to do so

Mar 12, 2010 | 1994 Cadillac DeVille

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the problem could be the engine coolant tempature sensor. all1992 through 1994 models equipped with electronic climate control can display trouble codes.replace coolant temp sensor.if problem contines have powertrain control module checked

May 15, 2009 | 1994 Cadillac DeVille

1 Answer

Put 1993 2.9 liter in a 1994 car


The coolant temp. sensors were a real problem on this year/model, and will cause a no start condition. You will often get a 1-2-3 code stored. Have you read the codes?

Bret
RepairPal.com

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87 Fleetwood Cadilac Sixty special


Take the car to a rebuttable garage or GM repair facility and have them scan your car's computer for diagnostic trouble codes (DTCs). Their scanner will be able tell if the problem in your digital display (assuming you have one), or if the problem is in the power-train.

If you do not have a digital display, then the problem is more than likely that the speedometer cable, on the back of the speedometer, has come off.

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