1997 Cadillac Deville reseting codes

DWJOHNSON

MEMBER
1997 CADILLAC DEVILLE
V8
FWD
AUTOMATIC
110,000 MILES

I know I can reset the error codes on my ford by removing the positive battery cable for about 3 minutes then replacing it. Is this how it can be done on the Caddy? I know Autozone can do it with the diagnostic device but will the battery interruption do the same? Need to remove codes so I can check the charge on the a/c. I have a low freon error code.

4 Replies

MERLIN2021

MECHANIC
17,250 POSTS

96 and newer can't be done without a scanner. Disconnecting the batt doesnt do it anymore. BTW with the old Ford, diconnect the negative cable, or you are rolling the dice. All pre 96 Fords only require removing the ECM fuse for 10 seconds!

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Monday, March 3rd, 2008 AT 5:18 PM

DWJOHNSON

MEMBER
5 POSTS

Thanks for the reply Merlin2021. That answers my question as to why the codes would not reset. I'll have AutoZone reset the codes after I write them down and compare to the off-warmer readout.

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Tuesday, March 4th, 2008 AT 5:15 PM

BUZZSAW

MECHANIC
1,198 POSTS

Sorry but you can reset them, after the off and warmer use the 3 buttons up by the IP to do it, I forget which

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Wednesday, March 5th, 2008 AT 8:29 AM

MERLIN2021

MECHANIC
17,250 POSTS

Sorry, Buzz has something there. Press the HI button after the dignostic completes, and this will reset it. It will display TCS codes clrear for three seconds, then press mode or defog, or turn key off, this will exit the test. The one caveat is your car MUST have this installed for this to work.

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Wednesday, March 5th, 2008 AT 12:42 PM