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2000 ML320 Oxygen Sensors - Help

 
Old 09-29-2017, 12:03 PM
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2000 ML320 Oxygen Sensors - Help

All,
I have been trying to figure this out for a while. My 2000 ML320 is displaying O2 errors for all 4 oxygen sensors. I have tried a few things but wanted to share if it is common all 4 sensors go bad at the same time.

Codes:
P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
P0155 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
P0161 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)

I am thinking to buy all 4 bosch 13782 sensors but wanted to check if there is anything else i should check before buying all 4. the Mechanic replaced Relay K28 with fuse F45 but not really sure if this makes any difference.

advise will be appreciated.
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Old 09-30-2017, 07:37 AM
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2002 ML 320 & 2006 ML500
Check fuse #19.
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Old 09-30-2017, 06:46 PM
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Maj,
Acoording to the machinic fuse is good.

what else could it be?
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Old 10-01-2017, 02:19 AM
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2002 ML 320 & 2006 ML500
According to the mech. is not good enough. You should see to it yourself.

Is this you on a different forum using a different name?


http://www.benzworld.org/forums/w163...l#post16603689
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