What? Code 44 again? (Post #304) 11/21/2012

It seems like every time I drive the Range Rover I get a Code 44. This is a GROSS over exaggeration of course. It only happens every other time. 😉
(did I just use an emoticon in my blog? Wow. I need help.)

I saw the Check Engine Light come on during the drive home on Tuesday evening. When I got home I looked at the display but it had not yet decided to tell me what was going on.

So when I got in the her this morning I again noticed the light and stopped to see if I got a code. I snapped this very dark picture at 0625(CST) with my cell phone in the cul-de-sac in front of the house. It was the code I expected to see. The gas mileage is pretty disappointing right now (13mpg). I’ve chalked that up to a wonky transmission but suspected the oxygen sensors as well.

On the drive in and as I was writing this I was thinking “what the hell”? I changed out the oxygen sensors fairly recently. It must be something else.

What else you might ask? That’s a very good question. Let’s go to J.E. Robison’s website for a quote. He has a great website and if I lived anywhere near him (Massachusetts) I’d be dragging my Landie in for his advice and service.

Code 44 – Lambda sensor A – left bank

Code 45 – Lambda sensor B – right bank

If one of these fault codes (#44 or #45) is displayed check the wiring to that particular lambda sensor. In addition this fault will be displayed if the vehicle has a condition which causes it to run very lean or very rich on one side (example – a vacuum leak or a bad injector). This code often appears in conjunction with the misfire codes in cases of bad ignition misfire (cross-firing plug wires) If both codes are displayed, the voltage supply to the heater coils of the sensors must be checked. Check for 12V appearing on the O2 signal lead, and check the heater circuit for shorts.

So as you can see there is a lot to get under the bonnet and take a look at. The vacuum hoses are a serious concern. Considering in the last two years we have had some weather extremes. Two summers with 120(F) temperatures followed by two winters with temperatures down to 5(F). This kind of weather is hell on rubber bits. I swap our wiper blades more often than I buy trousers for work.

So what if I don’t find anything out of place I replaced these just a year or two ago. Is that right?

I go back and look through the blog and find the last time I wrote about oxygen sensors for the Range Rover was November 2003. And my last evidence of me actually replacing them December 2003. Seriously? That can’t be right. Is it?

I see that I swapped the oxygen sensors for the Discovery in 2008 just before we reenacted National Lampoon’s Vacation (1983) and took the Mother Road out to California. Did I replace the O2 sensors back then on the Range Rover as well? I have a feeling I may have.

That is actually good news, because that was 4.5 years ago. I can live with that replacement rate. However I’m not real happy with the miles on these if they were replaced in 2008. But if I replaced them in 2003, I can seriously live with that.

So while the weather is still nice over the Thanksgiving holiday I will take a look around and see if anything is out of sorts. If no, I will order some O2 sensors.

Lookin’ good in Uptown.
Parked in front of Tucker’s Onion Burgers
on N.E. 23rd in OKC.

Thanks for reading and Happy Thanksgiving to all you out there. We have so much to be thankful for here in Oklahoma.