check engine light code P0171
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From: Greenville
check engine light code P0171
Hi guys, I've read some past post on these problems, but haven't heard of any solutions yet.
I've got a 1997 SSE with a 1999 engine with 67,000 miles on it. The problem is the check engine light comes on periodically. I have it scanned and the problem is always P0171 too lean bank 1.
I've checked the vacumn leaks and haven't found anything yet. I've cleaned the injectors numerous times. If I leave the light on without scanning, it will go off again by itsself. I haven't changed any oxygen sensors yet. I understand from reading that Bosch isn't the one to replace any with in the Bonne. Any suggestions?
Thanks,
rmccall869
I've got a 1997 SSE with a 1999 engine with 67,000 miles on it. The problem is the check engine light comes on periodically. I have it scanned and the problem is always P0171 too lean bank 1.
I've checked the vacumn leaks and haven't found anything yet. I've cleaned the injectors numerous times. If I leave the light on without scanning, it will go off again by itsself. I haven't changed any oxygen sensors yet. I understand from reading that Bosch isn't the one to replace any with in the Bonne. Any suggestions?
Thanks,
rmccall869
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Joined: Jan 2006
Posts: 16,539
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From: Purgatory, Pennsylvania
EGR or Dirty MAF can set this code off as well. Even loose air intake fittings(or so I read). Have you tried cleaning the MAF sensor with an aerosol electronics cleaner?. I don't know about Bosch 02 sensors, their spark plugs dont like GM engines in general. If the 02 was faulty though, it would trip it'* own code.
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