E-Class (W210) 1995-2002: E 200, E 220D, E 240, E 290TD, E 300TD, E 200, E 240, E 280, E 320, E 420, E 430 (Wagon, Touring, 4Matic)

Code P0170. Changed MAF, didn't work.

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Old 12-22-2011, 04:37 PM
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1996 E320
Code P0170. Changed MAF, didn't work.

Engine light came on.

Changed spark plugs, spark plug wires, Mass Air Flow sensor. Light still on.

The car runs fine.

Could it be the o2 sensors?

Old 12-22-2011, 06:17 PM
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300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
Did you clear the code

or just let the new maf self adapt?
Did you buy the maf off of ebay(fake clone) or www.autohausaz.com (real)?
Old 12-22-2011, 06:23 PM
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1996 E320
Originally Posted by ohlord
or just let the new maf self adapt?
Did you buy the maf off of ebay(fake clone) or www.autohausaz.com (real)?
Not the MAF issue, been turned off by shop and it came back on.

Yes, my MAF is authentic. No cheap Ebay crap.
Old 12-22-2011, 08:56 PM
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Have you checked for vacuum leaks?
Old 12-23-2011, 01:10 AM
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1996 E320
Originally Posted by MBtech1098
Have you checked for vacuum leaks?
No, but I check the attachments everything looks secured. I figured the chances are slim for a leak. But I will do the smoke test.

Anything else?
Old 12-23-2011, 01:40 AM
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300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
Fuel filter

air filter
o2 sensor
Old 12-23-2011, 01:45 AM
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I'll look into it! Thanks!
Old 01-04-2012, 01:38 PM
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E430
Going through the same hunt for the mysterious cause for the very annoying P0170.

I've got a '98 90K E430 and have done the easy stuff so far. MAF (from autohausaz), fuel filter(MBZ), air filter (Mann), 02 sensor, and gas cap gasket.

Don't think it's the spark plugs as it appears to not be the case. I've looked for vacuum leaks, but there doesn't appear to be any. Any suggestions on where to check?

We've had the car since new and this is really really annoying. The car, however, drives well, gets 20 mpg in mixed driving and the CEL only triggers when at idle.

I think the next step is to take it to the dealer for them to hook it up to the STAR diag to see what the cause may be. Fortunately, I have a good friend who's a mechanic at the dealer so at least I know the $$ spent is well invested.

-travis

Last edited by fatchance; 01-04-2012 at 01:40 PM. Reason: updates

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