1996 Cadillac Deville Fault codes PO716 & PO717

COVERBEY

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1996 CADILLAC DEVILLE
V8
FWD
AUTOMATIC
65,636 MILES

Smog test station reported the two fault codes listed and service engine liight resulting in a functional fail (emissions all ok) What can be done to erase computer memory long enough to pass the smog test? Thanks

Wednesday, October 14th, 2009 AT 5:20 PM

6 Replies

MATHIASO

MECHANIC
1,209 POSTS

It seem like you are not intersted in fixing the codes, you may need MIL Eliminator to pass the smog test .
https://www.2carpros.com/trouble_codes/obd2

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Wednesday, October 14th, 2009 AT 6:41 PM

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Generally available at auto parts stores?

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Wednesday, October 14th, 2009 AT 6:55 PM

SERVICE WRITER

MECHANIC
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What are the code numbers?

What state are you in and what is the criteria in y0our state to pass/fail emission tests?

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Wednesday, October 14th, 2009 AT 7:15 PM

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PO716 and 717. In California.

The smog technician wrote on the order "MIL is on (2) fault codes found-see VIR. Service engine soon light is on."

The car passed the visual inspection and emmissions test but failed the functional check.

They gave me the impression, without saying outright, something could be done to "wipe out the computer memory" operate the car through a few drive cycles to reboot the computer and retake the test.

Hope this helps. Thanks

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Thursday, October 15th, 2009 AT 11:28 AM

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