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#1
10-10-2008, 09:07 AM
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98 GA GT P0401 code
Hey folks. I have a 98 Grand AM GT V6. Im getting Code 0401 (EGR Gas flow insufficient). I replaced the egr valve cleaned out the tube coming off the exhaust but still have this error code. What else could it possibley be? Clog in the intake side at the EGR valve maybe? The DPFE (differential pressure) sensor if it has one?
Last edited by freekie; 10-11-2008 at 03:10 PM. 
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#2
10-10-2008, 03:15 PM
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Re: 98 GA GT P0402 code
I would clean out the intake side.
Also did you clear the code after replacing the EGR ?
__________________
1999 Grand Am SS 3.4 OHV 
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#3
10-10-2008, 07:04 PM
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Re: 98 GA GT P0401 code
Quote:
Last edited by freekie; 10-11-2008 at 03:13 PM.
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#4
10-11-2008, 03:12 PM
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Re: 98 GA GT P0401 code
OK problem was major clog in the intake. Removed the throttle body then there it was. The path leading to the EGR was totally clogged with carbon. Scraped it all out and cleaned it up. Problem solved. Took about hour and half.
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#5
10-12-2008, 09:37 AM
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Re: 98 GA GT P0401 code
Quote:
Your original EGR probly wasnt even bad, just the clog causing the DTC.
__________________
1999 Grand Am SS 3.4 OHV
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