1999 bonneville se 3800 code p1401 please help - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 07-15-2008, 01:43 AM   #1
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Default 1999 bonneville se 3800 code p1401 please help

i keep getting the code 1401 can some please help
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Old 07-15-2008, 03:59 PM   #2
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Dont think there is a GM P1401. Could be the reader means 1404, bad EGR., they do that sometimes, especially cheaper models. I have read in other places that code 1404 is sometimes mistakenly displayed and GM has a reflash for it, not that it may be the case with yours. Is the car driving rough? What kind of a scanner was used?
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Old 07-16-2008, 08:44 AM   #3
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Found it

P1401 Exhaust Gas Recirculation (EGR) flow test fault

I would remove the EGR when the car is stone cold (EGR'* get hot quick and stay hot), checking the pintle valve on the bottom. If it doesn't move in and out freely spray some carb cleaner into to the EGR and work the valve with something like a screwdriver until it moves freely.

Give it a try, most likely you'll be back up and running for the cost of some cleaner.
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Old 09-01-2008, 08:53 AM   #4
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i had another scan done and the code is 1441
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Old 09-02-2008, 09:33 AM   #5
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Ok, I googled it.

Found it'* the evap flow when no flow requested code. This usually points to a bad vacuum line or misrouted one. Check your vacuum diagram under the hood and replace any vacuum lines from the TB to soleniod and then to the canister.
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