4th Gear ratio incorrect code - Land Rovers Only

orange2 · 05-21-2008, 05:22 PM

I just purchased a 00 disco II. The service engine soon light came on. The code that came up was 4th gear ratio incorrect. Any ideas on what this could be. Today when I was driving home it seemed that the RPM's seemed a little high. It was around 4000 @ 70-75 MPH?

Thanks
Aaron

ultrrunr · 05-21-2008, 06:38 PM

Search for P0734 to see other posts about this. But, in short, you need a new MAF. Check with Tony at Cerrone's - Welcome to Cerrone's European

Disco Mike · 05-22-2008, 05:17 AM

No, you don't need a MAF yet, for that to be true, you would also need 2 other codes showing banks A and B running lean.
Check and see what type of air filter you are using, if it is a K&N, oiled filter, get rid of it today and go back to a standard paper filter cause K&N filters will kill your Bosch MAF.
Mike

orange2 · 05-23-2008, 09:45 PM

I'll check for other codes. I have only had the Discovory for a few days. I started checking it out last night. It had a dirty land rover air filter in it. Thanks for the advice

Disco Mike · 05-24-2008, 04:56 AM

Well, I would suggest you change out the filter, wipe out the filter box with a gamp cloth and then have the codes cleared. If the code comes back, go see Frank and see what else is going on.
Mike

archaeology_student · 05-25-2008, 10:30 AM

Isn't this thread supposed to be in the Tech & DIY forum? This is the general forum...

itsbob · 06-20-2008, 08:53 PM

Quote:

Originally Posted by archaeology_student

Isn't this thread supposed to be in the Tech & DIY forum? This is the general forum...

It answered my questions just fine right where it is!

05-21-2008, 05:22 PM	#1 (permalink)
orange2 Member Join Date: May 2008 Posts: 5 Gallery: 0	4th Gear ratio incorrect code I just purchased a 00 disco II. The service engine soon light came on. The code that came up was 4th gear ratio incorrect. Any ideas on what this could be. Today when I was driving home it seemed that the RPM's seemed a little high. It was around 4000 @ 70-75 MPH? Thanks Aaron

05-21-2008, 06:38 PM	#2 (permalink)
ultrrunr Senior Member Join Date: Feb 2008 Location: McDonough, GA Posts: 120 Gallery: 0	Search for P0734 to see other posts about this. But, in short, you need a new MAF. Check with Tony at Cerrone's - Welcome to Cerrone's European __________________ ultrrunr "Life's Tough, it's even tougher if you're stupid." - John Wayne

05-25-2008, 10:30 AM	#6 (permalink)
archaeology_student Senior Member Join Date: Jan 2007 Location: West Vancouver, B.C., CANADA Posts: 159 Gallery: 7	Isn't this thread supposed to be in the Tech & DIY forum? This is the general forum... __________________ Yup, I run BioDiesel in my Series MSN Blog with LR info and Photos

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05-22-2008, 05:17 AM	#3 (permalink)
Disco Mike Moderator Join Date: Aug 2004 Location: Parker, Colorado Posts: 5,506 Gallery: 0	No, you don't need a MAF yet, for that to be true, you would also need 2 other codes showing banks A and B running lean. Check and see what type of air filter you are using, if it is a K&N, oiled filter, get rid of it today and go back to a standard paper filter cause K&N filters will kill your Bosch MAF. Mike

05-23-2008, 09:45 PM	#4 (permalink)
orange2 Member Join Date: May 2008 Posts: 5 Gallery: 0	I'll check for other codes. I have only had the Discovory for a few days. I started checking it out last night. It had a dirty land rover air filter in it. Thanks for the advice

05-24-2008, 04:56 AM	#5 (permalink)
Disco Mike Moderator Join Date: Aug 2004 Location: Parker, Colorado Posts: 5,506 Gallery: 0	Well, I would suggest you change out the filter, wipe out the filter box with a gamp cloth and then have the codes cleared. If the code comes back, go see Frank and see what else is going on. Mike

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