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yet a code AO47...it is hot in France help


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Hello guys, it' s me the Frenchy, i have a new problem with my caddy, the last night i was driving and i put the a/c in hot for remove the condensation on the windshield, then a code appears AO12, then AO47, low refrigerant, a/c compressor off, this morning i disconnect the low side thermister and i reconnect it, the code AO12 is yet history, but the code AO47 is current, what can i do for this code? is it a great damage on my a/c system? thank you for youre help

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A012 is the low side temperature circuit code. Since the code is now history, it is possible the contacts were just dirty. The AO47 is the low refrigerant code. You probably have a leak in the system and it is shut down to protect the compressor. Look the entire system over for oil/grease on the lines, compressor, compressor clutch face, etc. A large amount of oil/grease = a refrigerant leak. You could have a shop use a leak detector to locate/repair the leak.

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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When was the last time it was serviced? It is not uncommon to have to add a little refrigerant every 5 years or so.

i baught this car for 1 month, i dont no when was the last serviced, this morning i have disconnect the thermister and i clean it with contact spay, end then i disconnect the battery and i reconnect it, so they are no current code, the a/c work fine, it is good cold, i wait for some days to see if the code AO47 are coming, the last night the first code was AO12 and then AO47 the A/C was in hot selection, is it possible that the code AO47 is coming because the first code AO12 ?

sorry for my english i am French i speak not very good english.....but i love the american cars

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is it possible that the code AO47 is coming because the first code AO12 ?

Not positive, but yes I think so.

Your English is fine.

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When was the last time it was serviced? It is not uncommon to have to add a little refrigerant every 5 years or so.

i baught this car for 1 month, i dont no when was the last serviced, this morning i have disconnect the thermister and i clean it with contact spay, end then i disconnect the battery and i reconnect it, so they are no current code, the a/c work fine, it is good cold, i wait for some days to see if the code AO47 are coming, the last night the first code was AO12 and then AO47 the A/C was in hot selection, is it possible that the code AO47 is coming because the first code AO12 ?

sorry for my english i am French i speak not very good english.....but i love the american cars

alex, here is another caddyinfo member from France, we helped him with his PCM a while back, I am not sure how far he is from you, but it might be good for you guys to know of each other, Mike

http://caddyinfo.ipbhost.com/index.php?sho...4&hl=france

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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