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Old 08-07-2003, 01:09 PM
RProsser RProsser is offline
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Join Date: Aug 2003
Posts: 48
Got the code error: PO171 - MAS sensor?

Okay, got the error code checked at my local Union 76 station. They guy was going to give me a freebie, so I flipped him $25.

So here's the scoop on the CE light error code: 00171 or P0171, meaning "system too lean, bank 1" according to this MBZ OBD2 fault code manual

Now if I go to a different MBZ OBD2 error code link, it also adds "faulty mass air sensor" to the description.

Can anyone confirm this is the correct interpretation before I go out and spend $250 on a new MAS?


Last edited by RProsser; 08-07-2003 at 01:40 PM.
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