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audiophile
02-09-2004, 02:31 PM
stupid CEL came on today went to autozone to check it, P0170.
fuel trim malfunction bank 1 , that's what it read. any suggestions, possibly o2 sensor.please help:( , thanks;)
J Irwan
02-09-2004, 03:02 PM
please do a search... on the forum

Some members already has some discussion on the very same code "P0170".


Regardz,
max2105
02-10-2004, 06:06 AM
You can disconnect the NEGATIVE battery terminal for 10 minutes to reset the CEL and see if it comes back. If so, it's not a glitch and you have to take care of it.
audiophile
02-10-2004, 07:12 AM
thanks
Rocky
02-10-2004, 07:34 AM
99% ish the MAS.
timecop369
02-10-2004, 01:39 PM
I agree... prob. a MAS problem... happened to me. Don't spend $100+ on O2 sensor!
audiophile
02-10-2004, 06:21 PM
should i clean first then reset the light and if it does come back on , replace it.
moebiusgold
02-10-2004, 06:30 PM
Originally posted by audiophile
should i clean first then reset the light and if it does come back on , replace it.
I've tried to clean 2 of them and all they did was get worse. Buy a new one. If someone could actually figure out how to properly clean them there would be a gold mine out there. Beware, this is a $pendy part. I would say that is 99.9% sure that it is your mass air meter (or MAF or MAS). Good luck, let us know how it turns out.
jnolte
02-10-2004, 06:37 PM
www.importec.com has them for a good price, get one from there.
audiophile
02-11-2004, 08:19 PM
couldn't find it , 98 c230, they don't have them for my car
audiophile
02-13-2004, 02:10 PM
well cleaned the air floe meter out and went to see if they could reset the light and another code came out, saying that it is the air flow sensor and the o2 sensor, so i'm f@#$ed, oh well there goes my exhaust sys.
moebiusgold
02-13-2004, 04:48 PM
Just do the MAF first unless you have lots of miles on your ride, and it has never been replaced, then replace the front O2 also.
gqkosen
02-13-2004, 06:21 PM
How hard is it to replace the MAF?
martattack
02-13-2004, 07:16 PM
GGKosen: I don't konw what model you have, but on my C280, it is very easy to replace. It is on the left side of the motor on the very top of the engine bay. It is on the left side of the pipe that runs across the motor. There are just a couple clips to detach and take off the wiring plug.
audiophile
02-13-2004, 11:08 PM
my whip has about 103000, i bought with about 93000 mi. don't when or if it has been changed.