Help!! Codes P0171 And P0173 Pulled
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Member
Joined: Oct 2007
Posts: 121
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1998 CLK 320
Help!! Codes P0171 And P0173 Pulled
My Cel Has Been Going On And Off For Awhile Now
And I Just Got The Codes Pulled Today
I Read That It Could Be My O2 Sensor
A Fuel Trim Malfunction?
But Ultimately A Maf Sensor.
How Do You Put In The 02 Sensor
The Maf Takes Seconds To Put In But The 02 Sensor????
And I Just Got The Codes Pulled Today
I Read That It Could Be My O2 Sensor
A Fuel Trim Malfunction?
But Ultimately A Maf Sensor.
How Do You Put In The 02 Sensor
The Maf Takes Seconds To Put In But The 02 Sensor????
Member
Joined: Mar 2007
Posts: 157
Likes: 36
From: Suffern, NY
2020 GLC300 & 2009 SL550 (previously had 1999 CLK / 2006 E500 / 2011 GL450)
I think you would have gotten another code if the O2 sensors were bad (I did - P0140-something if I recall). Regarding replacing O2 sensors, supposedly they screw in like spark plugs (although I haven't tried myself; I paid the dealer an hour of labor to do it since I was too lazy to find the part elsewhere).
If you can't reset the codes with a code reader that you have on hand, disconnect the battery for a minute. Note that either way it will likely take a couple of days to know if the CEL will turn back on.
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,308
Likes: 62
From: Bethesda, MD
2000 SL500
could also be some kind of vacuum leak...check all the clamps around your air box and all other piping to your engine...then get the code erased with OBDII and see if it comes back up...
MBWorld Fanatic!
Joined: Sep 2005
Posts: 1,358
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From: Nova / Rockville
Custom CLK / 05 E500 4matic / 04 Acura TL <<Daily
Do you mean Oxygen sensors? they're located under the car, before and after the cats is where you find this oxygen sensors and our cars have 4 of them.
Super Member
Joined: Jan 2007
Posts: 566
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From: OC, CA
1999 CLK430 (sold) 03 CL55
I'm going to look at it later, I thought it had like 1 or 2! 
