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Gabriel

Gabriel 2/27/2012

2001 Mercedes Benz E320 Base 6 Cyl 3.2L

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

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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

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0

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