check engine light - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-09-2005, 11:29 AM   #11
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Any help diagnosing the codes? Thanks!
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Old 05-09-2005, 11:38 AM   #12
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History DTC P0420
Catalyst efficiency below threshld (bamk 1) MIL requested since IGN not run since clear P/F

This is the O2 behind the cat, or in your case, the Spoof. It'* not working right, or it'* disconnected. This is only an emissions code, and will have no effect on performance, but may set a light. In your case, it did set a light "Mil Requested". Malfunction Indicator Lamp.

History DTC P0705
Trans range sensor circuit malfunction (PRNDL input) MIL not requested since IGN PASS since clear P/F

This is not a serious thing. This is the PRNDL shift location box (park/neutral safety switch). It'* feedback from your shifter to say what gear you're in. In many cases when you get this code, you can shift into D or R without a foot on the brake. "Mil not requested". No light.


History DTC P1106
MAP sensor intermittent CKT high voltage MIL not requested since IGN not run since clear P/F

You replaced this already, right? "Mil not requested since IGN not run since clear". It didn't request a light because you cleared it. It may have set a light before that.

I'd get the car re-scanned after 50 or more starts. I'm betting your catalyst code will return, and possibly the PRNDL (which I would ignore unless it sets a light unless you have small children that play in the car).
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Old 05-10-2005, 02:58 PM   #13
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Thanks for the help. Is anyone else having trouble with their spoof? I checked and it is not unhooked. I bought it from intense racing. I am not concerned with the shifter or MAP since I already replaced the MAP.

Thanks agian.
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Old 05-10-2005, 03:06 PM   #14
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I'm aware of a few of the INTENSE spoofs, and all seem ok to the best of my knowledge. Isn't there a little red LED on it? Is it illuminated? PM 2000SilverBullet and ask him, or just get ahold of INTENSE.

Rogue (gearhead here) is their customer service manager.
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