Code 44, where are you?

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Frobisher
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Code 44, where are you?

Post by Frobisher » Sat Jun 16, 2018 1:46 pm

Hi all,

The check engine light came on a few weeks back to accompany code 44 on my led code box under the seat (95 Disco). It indicates a fault in the left side O2 sensor. I’ve checked the vac lines as best as possible and cleaned the stepper motor. The sensor is definitely covered with leaked oil and looks nasty. It’s probably the original after 175,000 miles, but I don’t know for sure.

Any suggestions on what else to check before I replace a sensor? Thanks.
Greg
Greg
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1995 Discovery I

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Frobisher
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Re: Code 44, where are you?

Post by Frobisher » Mon Aug 06, 2018 6:03 pm

For those who are curious in the future, it really was worth it to replace the O2 sensors as per code 44. It has made a world of difference in the running and idling. I installed Bosch sensors from Amazon, and so far so good. I even got back 1 more mpg, so it’s roughly a 10% improvement!
Greg
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1995 Discovery I

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series guy
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Re: Code 44, where are you?

Post by series guy » Mon Aug 06, 2018 6:30 pm

I replaced the O2 sensors on my D1 when I first bought it. Made a world of difference in the running.
Old forlorn Rovers and parabolic leaf springs. These are a few of my favorite things.

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Frobisher
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Re: Code 44, where are you?

Post by Frobisher » Mon Aug 13, 2018 11:19 pm

I had no idea it would make such a difference. Go figure.
Greg
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1995 Discovery I

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Re: Code 44, where are you?

Post by series guy » Tue Aug 14, 2018 7:17 am

I think one of the reasons that the O2 sensors make such a difference is that Rover uses a square wave sensor instead of the cheaper and more common voltage generating sensor.
Old forlorn Rovers and parabolic leaf springs. These are a few of my favorite things.

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