Quote:
Originally Posted by blueeagle289
Using my electronic device, I found that the cause of the CEL is PO150 02 sensor in
"Bank 2 - sensor 1"
How do I determine exactly which sensor this is on the ML 320- in order to replace it properly??
Also, do I really need a special tool to remove the sensor or can I do it with the proper socket??
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Bank 2, so cylinders 4,5, and 6
Sensor 1, so the upstream, or pre-cat sensor
A normal wrench will usually fit (22mm or 7/8"), sockets have a hard time dealing with the wiring coming out of the sensor. You can jam one on for removal of a bad sensor, but you wouldn't want to do that with a new sensor.
MV