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Gabriel
Gabriel 2/27/2012
2001 Mercedes Benz E320 Base 6Cyl3.2L - Engine
What specific issue brings up the codes p0170 and p0173 on a 2001 e320 mecedes?
P0170
P0173
2 Answers
  • yboy82
    yboy82 2/27/2012
    P0170 means Fuel Trim Malfunction (Bank 1). P0170 indicates a malfunction in the PCM control of the air-fuel ratio. Bank 1 is the side of an engine that has cylinder 1.

    Possible Causes:

    Dirty or defective MAF sensor
    Vacuum leak
    Defective fuel pressure regulator
    Defective O2 sensor
    Oil contamination in the cam/crank sensor wiring or MAF/O2 sensor connector

    Possible solutions:

    Clean or replace MAF sensor
    Replace fuel regulator
    Replace damaged or cracked vacuum hoses
    Clean cam/crank sensor wiring or MAF/O2 sensor connector
    Replace O2 sensor
    Reply
    0
    yboy82
    Gabriel 3/11/2012
    Thanks for your help. :)
  • yboy82
    yboy82 2/27/2012
    P0173 means Fuel Trim Malfunction (Bank 2). P0173 indicates a malfunction in the fuel trims. Bank 2 is the side opposite to cylinder 1.

    Possible Causes:

    Oil contamination in the cam/crank or MAF sensor wiring or connector
    Dirty or defective MAF sensor
    Vacuum leak
    Defective ignition coil/s
    Defective fuel pressure regulator
    Leaking camshaft adjuster solenoids
    Defective O2 sensor

    Possible Solutions:

    Clean cam/crank or MAF sensor wiring or connector
    Clean or replace MAF sensor
    Replace fuel regulator
    Replace damaged vacuum hoses
    Replace camshaft adjuster solenoids gaskets
    Replace ignition coil/s
    Replace O2 sensor
    Reply
    0
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