Question about 1996 Cadillac DeVille

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1996 cadillac deville service engine soon light on,

Code is injector circuits open, what and where are these?

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These are under that big silver plate looking thin remove it and look for eight of these all the same with a rail going to all of them, and a wire plug in,u may have one unpluged or cut or melted or something but one of them is not getting signal from wire

Posted on Jun 27, 2009


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What does code P 119 mean on my Cadillac 1994 Seville STS

P0119 Cadillac Engine Coolant Temperature Circuit Intermittent
Possible causes - Low engine coolant level
- Faulty Engine Coolant Temperature (ECT) sensor
- Faulty engine coolant thermostat
- Engine Coolant Temperature (ECT) sensor harness is open or shorted
- Engine Coolant Temperature (ECT) sensor electrical circuit poor connection What about the obd code? The Engine Control Module (ECM) detected an erratic signal from the engine Coolant Temperature (ECT) sensor during the system monitor test Symptoms - Engine Light ON (or Service Engine Soon Warning Light) P0119 Cadillac Description The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
P119 or P0119 ?

P119 - Shorted Fuel Injector Problem

Feb 18, 2016 | Cadillac Cars & Trucks

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1996, cadillac, deville getting codes pc0171 &pc0174,what does this mean?

Fuel trim lean, banks 1 & 2. That's a pretty strong indication that you should check the fuel pump pressure at the fuel rail, and check the fuel flow rate while you're there. There's a good chance that your fuel pump is just about ready to be replaced.

If you see good pressure & flow rate, run a couple of jugs (not at the same time) of carburetor & fuel injector cleaner through the gas tank. It's possible that all your injectors have just gotten so dirty that they can't give you a full-rich mixture.

You'd best do it fairly soon - the engine is running lean, and it can't tolerate that for any great long time without some damage.

Aug 03, 2014 | 1996 Cadillac DeVille

1 Answer

Will my 96 cadillac sls pass emmissions with service engine soon light on?

depends on your code but chances are it will not. Your car has the older OBD scanning system but you can still get a scan done at a shop to check and see what your code is.

Oct 28, 2012 | 1996 Cadillac DeVille

1 Answer


first you have to found the problem and read the code , go to advance auto part and read the code , its free .

Nov 29, 2011 | 1999 Cadillac DeVille

1 Answer

How to reset the Service Engine Soon warning lamp on a 2003 Cadillac DeVille?

"Service Engine Soon" message means that the PCM (Powetrain Control Module aka engine computer) has detected a fault in the fuel, ignition, or emission systems. It is the same as a Check Engine light.

This could be something as simple as a loose fuel cap, or it could be a circuit problem with a component like a fuel injector, O2 sensor, temp sensor, emission system component, etc. When this message appears the PCM stores a trouble code that tells the technician what component is acting up.

This code can be read with a scan tool or code reader. Once the code is retrieved, then the tech can follow the diagnostic procedure for that code and troubleshoot it and then repair it. Most shops (and the dealer) have the equipment to do this. Autozone and some auto parts stores also have a scan tool that will connect to your Cadillac and read the code so you would have an idea as to what component is setting the code; most auto parts stores will check this for no charge.

If the vehicle seems to run ok, then I would not worry too much, but still get the code checked as soon as it is convenient. If the vehicle is running bad, then get this checked as soon as you can because continued driving it may cause further damage.

Hope this helps and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer. Thank you for using FixYa.


Oct 20, 2011 | 2003 Cadillac Deville

1 Answer

How do I reset service engine light on 1999 cadillac deville

1996 on up OBD II systems require a scanner with the 'clear code' feature to reset the SES light.

Otherwise, one can cycle starting and stopping the engine 30 or 40 times to clear the SES light. This is not recommended, though, as it takes a long time.

Jun 03, 2010 | 1999 Cadillac DeVille

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I would like to find out what error codes e26 e27 e52 mean on service soon of 1986 Cadillac Deville

E26 - Shorted Throttle Switch Circuit
E27 - Open circuit in throttle switch
On these 2 codes replace the TPS and clear codes (throttle position sensor).
E52 PCM/ECM Memory Reset
Have u cleared the memory? don't worry about this code.

Apr 08, 2009 | 1987 Cadillac DeVille

1 Answer

Whath does "service engine soonmeans"

SERVICE ENGINE SOON and SERVICE ENGINE NOW are 2 amber warning lights pertaining to the vehicles computers.SERVICE SOON advises you of a problem, although not an emergency should be attended to promptly. Your technician can trace the problem by accessing fault codes through the climate control panel. SERVICE NOW indicates a more severe problem which will most likely precipitate a failure / breakdown. The CHANGE OIL LIGHT indicates by time and mileage is a separate light.

Mar 20, 2009 | 2000 Cadillac DeVille

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