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Code clarification

Everything on the Volvo S80. Sometimes called an "executive car", the S80 was Volvo's top-of-the-line passenger car. P2 platform.
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jkdjim
Posts: 65
Joined: 11 April 2012
Year and Model: S80 T6 2000
Location: Los Angeles, CA

Code clarification

Post by jkdjim »

I have a DTC sitting in my system and am not sure how to fix it.

My PPC reader says ECM-271A which translates to either P2179 -- ECM-271A Long-term fuel trim, bank 2 -- Upper limit or
P2180 -- ECM-271A Long-term fuel trim, bank 2 -- Lower limit.

So... how do I know which limit I'm at and how do I fix it once I find out?

Some googling brings up cleaning MAF (which I did a few months ago), replacing oxygen sensors (I'm already broke enough already) or cleaning PCV (which I've never done on any car).

Any leads?
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boosted5cyl
Posts: 1100
Joined: 29 January 2010
Year and Model: '98 V70 T5, '99 S80
Location: St. Paul, MN
Been thanked: 1 time

Post by boosted5cyl »

I think you'll have to look at your long term fuel trim for that bank to find out which limit it is.....
Attached info on the code you pulled
Attachments
284_ ECM-271A Adaptive lambda control, bank 2 .Bottom limit.pdf
(30.41 KiB) Downloaded 495 times
'04 XC90 2.5T AWD (Angus) 134K.
'99 S80 T6 (Medusa) 214k. On borrowed time LOL
'98 V70 T5 (Vivienne). RIP @ 228K. Spun rod bearings.
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