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Old Jun 25, 2010 | 07:44 AM
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maxcichon
Senior Member
Joined: Sep 2007
Posts: 8,014
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From: MOFN, AL, 70 miles from George
Default Re: check engine light--bad gas???

P0171 Bank 1 lean.

I found this at MBWorld.org

P0171 System too lean OBD code - MBWorld.org Forums

You may have to join (not a bad thing-and free!) to view photos.

The God of MB knowledge (Buellwinkle) says:

p0131 & p0171 codes - MBWorld.org Forums

But before you start throwing cash at it, run the gas low and refill with top-tier 93 octane.

Clear the code and see if it re-appears.

Best of luck!
 

Last edited by maxcichon; Jun 25, 2010 at 07:46 AM.
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