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2003 deville with error codes - 2003 Cadillac Deville

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Yea, what error codes ?

Posted on Dec 11, 2016

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I have a 2003 Cadillac Deville that has error codes that will not clear. It can not pass inspection and over 200 miles have been put on it in an effort to clear codes to pass inspection


What code's and were they diagnosed , You can't just pull a battery cable and have the light go off . If the light comes back on there is a hard falt . Trouble Codes Just incase your not familiar with DTC'S and OBD2 diagnostic's

Dec 10, 2016 | 2003 Cadillac Deville

1 Answer

What else could be my RPM problem on my 2003 Deville, besides the idle valve and the idle position sensor that I've changed already, but still very high?


Since you are a DIYer, I recommend a ECU error code read at your favorite auto parts store (ask nicely) and a repair manual from them.

Apr 12, 2015 | 2003 Cadillac Deville

1 Answer

Where is the pvc located on a 2003 Cadillac Deville ?


I don't think there is an "old-style" PCV valve on the 2003 Deville, instead, it was 'replaced" by an orifice that is pressed into the cam cover fitting. I think the PCV system came under the EPA's OBD mandate as an emission device that needs to be monitored by onboard systems, and so the "old-style" PCV valve was replaced by a simple orifice (removing one more possible failure point). The onboard system monitors the flow and operation of the PCV system, so if something goes wrong, it will set an error code and turn on the check engine light - even if you just have a cracked or disconnected PCV hose.

Mar 20, 2015 | 2003 Cadillac Deville

1 Answer

How to clear codes on a 2003 deville


Probably faulty abs module, traction control is part of the same system

Jun 25, 2012 | 2003 Cadillac Deville

1 Answer

I have a 2003 Cadillac DeVille and the radio won't turn on but the clock display blinks on and off every second. Is this a fuse problem?


Sounds like the radio needs to be reset with program code from dealer, unless you have it written down, this is a Theft deterrent system

Aug 30, 2011 | 2003 Cadillac Deville

1 Answer

My 2003 cadillac deville-the service engine soon light came on and stayed


On a lot of cars the light is reset when you get an oil change, air filter etc. It's overdue for a "look see". You can always go to advance auto and borrow the code reader for free. Plug it in under your dash and will read and reset any codes

Jun 14, 2010 | 2003 Cadillac Deville

1 Answer

2003 deville I have rough idling, surging and then lowering of idle. A P410 code comes up. What is this and how do I repair it?


P410 code secondary air injection malfunction
It could be internal head cylinder problem
I would have it checked out

Mar 10, 2010 | 2003 Cadillac Deville

2 Answers

2003 Cadillac Deville a check gas cap error appears with svc engi


put a new gas cap, those system are pres. even if
the cap look ok it maby leaking replace with a new
one it should solve your prob.
eng.ligh come on because of the gas cap

Apr 09, 2009 | 2005 Cadillac Seville

2 Answers

2003 Cadillac Deville stalls while driving


Check your pending trouble codes, could be your crankshaft sensor b...

Nov 28, 2008 | 2003 Cadillac Deville

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