O2 sensor heater circuit
Thread Starter
Newbie
Joined: Apr 2012
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2000 E320
O2 sensor heater circuit
I had a P0150 and P0153 code on my 2000 E320. I replaced the O2 sensor on the passenger side. The check engine light is now OFF. However, there is foul smell (like unburned fuel) every time I start the car. The mileage indicator says 7 mpg. This low mpg varies from 4 to 15 mpg on short trips (maybe within 7 miles of driving). Most of my driving is within 7 miles.
I drove over 40 miles one day, and the mpg went up to about 26 mpg. What's going on? Anybody please.
Bolero
I drove over 40 miles one day, and the mpg went up to about 26 mpg. What's going on? Anybody please.
Bolero
MBWorld Fanatic!
Joined: Apr 2007
Posts: 6,171
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300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
What side of the road do
you drive on? 
Those codes indicate bank 2 sensor failure so looking out from the drivers seat no matter which side your steering wheel is on bank 2 is on the left side.
So if you are in the U.S. you replaced the wrong o2 sensor.
Those codes indicate bank 2 sensor failure so looking out from the drivers seat no matter which side your steering wheel is on bank 2 is on the left side.
So if you are in the U.S. you replaced the wrong o2 sensor.
