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Error Code on 92 Cadillac Sedan Deville


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kmfmgk
User

Nov 11, 2015, 12:28 PM

Post #1 of 8 (1010 views)
Error Code on 92 Cadillac Sedan Deville Sign In

Hi. My name is Jim. I have several error codes on my 92 Cadillac Sedan Deville. 154,000 miles. Can you tell me what Code F30 means? As added info, my climate control comes on and off at random and changes functions on it's own at random. My remote door lock just stopped working. And my trunk button will not work. Error codes are E13, E44, E52 (I know this is when I disconnecte the battery), F30 and F48. I wonder if all these codes tie into to each other and may be the BCM? Thanks for any info and advice.


Discretesignals
Ultimate Carjunky / Moderator
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Nov 11, 2015, 2:06 PM

Post #2 of 8 (997 views)
Re: Error Code on 92 Cadillac Sedan Deville Sign In

Do you have experience in diagnosing electrical problems including signaling on vehicles?


Quote
Code F30 is set if the BCM is unable to receive data from the Electronic Climate Control panel (ECC).


E13 has to do with the O2 sensor not changing voltages
E44 is the O2 sensor is staying lean either because there is a circuit issue or the engine is running lean for some reason.
E52 means KAM was lost...probably because you had disconnected the battery.
F38 pressure means the BCM detected a low refrigerant level.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Nov 11, 2015, 2:08 PM)


kmfmgk
User

Nov 11, 2015, 2:53 PM

Post #3 of 8 (986 views)
Re: Error Code on 92 Cadillac Sedan Deville Sign In

Thanks Discretsignals. No I don't have much auto electrical experience. And you mentioned F38, but it was F48. Also there is a slight smell of anti freeze when I start it up. But no leaks and the passenger side footmat is dry. Car drives good, but I'm afrads to take it to a dealer and have them start fixing things when it could be one thing such as the BCM causing it all.


Discretesignals
Ultimate Carjunky / Moderator
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Nov 11, 2015, 5:11 PM

Post #4 of 8 (980 views)
Re: Error Code on 92 Cadillac Sedan Deville Sign In

I apologize, F48 means there is a problem with the refrigerant level in the ac system. If the refrigerant level gets too low that can cause that code to trigger and the compressor will be disabled. Until there is the proper amount of refrigerant in the system and the code is cleared, that problem will remain.

I wouldn't condemn the BCM if it is flagging trouble codes. You stated your AC panel is acting goofy, so you might want to troubleshoot why. That means checking power and grounds to be sure it has what it needs. You may also need to check the communication circuit that the AC control panel talks to the BCM on to make sure it isn't pulled high or low all the time. Checking sensor supply voltage that comes from the panel would be important also.

The O2 sensor codes shouldn't have anything to do with the BCM. You'd have to monitor the O2 sensor voltage and do some O2 sensor tests to see if it working or not.

If your smelling coolant, you should have the coolant system pressure tested. Sometimes leaks don't show up unless the system is under pressure and the engine is cold.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Nov 11, 2015, 5:15 PM)


kmfmgk
User

Nov 14, 2015, 12:22 PM

Post #5 of 8 (929 views)
Re: Error Code on 92 Cadillac Sedan Deville Sign In

UPDATE: I tool the car on a good road test several hundred miles and back. I changed the plugs and new oil and filter before hand. They were the original plugs (154,000 miles). I thought I would see if that would correct the sensor codes. But the Climate Control went completely out. It does not light up and none of the buttons work, so I can't het back to error code check. The defroster is continually on. I don't know if it is the Climate Control module or BCM. I'm continuing to work with it. Any and All advice from anybody still appreciated.


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Nov 14, 2015, 1:50 PM

Post #6 of 8 (923 views)
Re: Error Code on 92 Cadillac Sedan Deville Sign In


Quote
You stated your AC panel is acting goofy, so you might want to troubleshoot why. That means checking power and grounds to be sure it has what it needs. You may also need to check the communication circuit that the AC control panel talks to the BCM on to make sure it isn't pulled high or low all the time. Checking sensor supply voltage that comes from the panel would be important also.






Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


kmfmgk
User

Nov 20, 2015, 7:34 AM

Post #7 of 8 (896 views)
Re: Error Code on 92 Cadillac Sedan Deville Sign In

UPDATE: I'm still dealing with this problem. Ground issue does not seem to be the problem. My next move I think will be to take the Climate Control module out. Is there a way to check if it is operational by taking it out? I can replace it, but would like to know if it is operational (meaning I have another problem) or it's not operational (meaning replacing it should fix my problem). Otherwise the car runs and drives fine.


kmfmgk
User

Dec 7, 2015, 2:48 PM

Post #8 of 8 (857 views)
Re: Error Code on 92 Cadillac Sedan Deville Sign In

I want to thank you Discretesignals for your help. I replaced the Electronic Climate Control with a used one and that solved my biggest problem. My ECC is now communicating with the BCM and working properly. I stopped getting the sensor codes after I replaced the plugs, but yesterday the engine started running rough a little and I got an engine light. I checked codes and I have E-13 and E-44 again. I am planning on replacing the oxygen sensors to see if it clears this problem up. Thanks for all the advice and if anyone has anymore advice on these codes please let me know. I am very thankful for this forum.






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