Method to retrieve CEL Codes?? - Defender Source
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  #1  
Old June 5th, 2013, 11:37 AM
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Pete Gerbine, III
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Method to retrieve CEL Codes??

Is there a method to retrieve CEL Codes without a scanner? Light is coming on in my '93 NAS 110 and so far haven't been able to find anyone that can pull codes on anything older than a '96...

Thanks,
Pete
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  #2  
Old June 5th, 2013, 11:41 AM
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Quote:
Originally Posted by Fred Lobster View Post
Is there a method to retrieve CEL Codes without a scanner? Light is coming on in my '93 NAS 110 and so far haven't been able to find anyone that can pull codes on anything older than a '96...

Thanks,
Pete
Is this any help..

http://www.robisonservice.com/servic...er_trouble.asp
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Old June 5th, 2013, 11:46 AM
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You're OBDI - follow these steps

http://www.fourfold.org/LR_FAQ/Defen...ult.Codes.html
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Old June 5th, 2013, 02:50 PM
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Pete Gerbine, III
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It appears that those links are referring to the RR and Discovery. It mentions of a small black box with a red LED under the passenger seat. Is this box present in the '93 NAS 110?
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Old June 5th, 2013, 03:06 PM
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Quote:
Originally Posted by Fred Lobster View Post
It appears that those links are referring to the RR and Discovery. It mentions of a small black box with a red LED under the passenger seat. Is this box present in the '93 NAS 110?
We have no motivation to lead you astray. We posted those links because they pertain to your truck/situation. Have you looked under your passenger seat? If it's not there, I think it's usually behind your RH toe box.

Search ECM in here. Save the link to your favorites and you can reference it all the time.

http://www.internet-tools.co.uk/land...l%20(1993).pdf
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  #6  
Old June 5th, 2013, 03:12 PM
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If you do not have the box, you could find a used one off of a RR. That or you can build an interface to a PC, although that requires a little bit of work.
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Old June 5th, 2013, 03:16 PM
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Nah, 93 110 is 14CUX, not OBD. The only codes that elicit a CEL are for bad O2 sensors. You have either one two or both inoperative, or at least failing to send a voltage that the ECU is happy with.
Time to replace them.
There is also that nasty old maintenance interval lamp that comes on too. You sure it's not that light? That one can be manually reset by you with a paper clip.

To answer the question though, yes there is a way to read the codes with a laptop and an interface cable (that you have to make yourself) I sleazed off Galpin's setup last time I needed to check for faults cz I'm too lazy to take the plastic cover off the seat base.
The cable is a couple bucks worth of Radio shack/britishwiring parts and the software is a free download. If you are a 14CUX driver, it is very handy to have the app and the cable.
Link to all that shyte is: https://code.google.com/p/rovergauge/
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  #8  
Old June 5th, 2013, 03:45 PM
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NAS 110s have the box that has the code display. It is in the passenger side footwell behind the trim panel under the dash.
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Old June 5th, 2013, 03:54 PM
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Originally Posted by evilfij View Post
NAS 110s have the box that has the code display. It is in the passenger side footwell behind the trim panel under the dash.
Are they like Classics in that it's so much of a PITA to get to the display as to make it virtually useless? I find it's a simpler deal to attach (Galpin's setup) into the under-seat interface plug than to disassemble half the passenger seat.
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  #10  
Old June 5th, 2013, 04:40 PM
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Yeah...nothing under the passenger seat cubby but a jack, jumper cables and other misc. rocovery items. There is a black box...approx. 3"x3"x1", labelled "Range Rover On Board Diagnostic Display", but I don't see an LED, or any other lights present. It is located next to the ECM at the passenger toe box.

Also, it is not the "Service Engine" light...it is the "Check Engine" light. I can make the light go off by the battery disconnect switch...and it may stay off a day/week and run just fine....but then it comes on and runs a little rough. Sound like O2 sensors, maybe?
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Old June 5th, 2013, 04:42 PM
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That is the box! It should show the code if you have a CEL. Truck has to be on to show code.
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Old June 5th, 2013, 04:43 PM
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Quote:
Originally Posted by Fred Lobster View Post
Yeah...nothing under the passenger seat cubby but a jack, jumper cables and other misc. rocovery items. There is a black box...approx. 3"x3"x1", labelled "Range Rover On Board Diagnostic Display", but I don't see an LED, or any other lights present. It is located next to the ECM at the passenger toe box.

Also, it is not the "Service Engine" light...it is the "Check Engine" light. I can make the light go off by the battery disconnect switch...and it may stay off a day/week and run just fine....but then it comes on and runs a little rough. Sound like O2 sensors, maybe?
Well, that's certainly the display. I can't speak to what would make the light come on, but usually there will be a code displayed as well.
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Old June 5th, 2013, 04:56 PM
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Quote:
Originally Posted by Fred Lobster View Post
There is a black box...approx. 3"x3"x1", labelled "Range Rover On Board Diagnostic Display", but I don't see an LED, or any other lights present. It is located next to the ECM at the passenger toe box.
That is it. Is the key in at least position II, and did you lift it up and look at the box? There should be two digits displayed on it if it is displaying a code.

Looks like this.

http://www.britishv8.org/articles/Im...over-EFI-U.jpg

http://www.britishv8.org/articles/rover-14cux-efi.htm
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  #14  
Old June 5th, 2013, 05:12 PM
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If you want to prove out the code display box, one could disconnect the engine ecu- with the key off please-reconnect, turn the key on and see if it displays the code "02".
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Old June 5th, 2013, 05:21 PM
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Thanks!...Now I'll wait for the CEL to come back on and see what appears.
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Old June 5th, 2013, 08:56 PM
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  #17  
Old June 5th, 2013, 09:53 PM
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Thanks, guys...I am reading a code 45....so looks like an O2 sensor....
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Old June 5th, 2013, 09:57 PM
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Like you weren't a newb once!

Best of luck Pete. If you haven't done so yet, do what Trevor suggests to make sure you understand how the display works (and that it is working). If the CEL comes on, one or more codes will be displayed and you can clear them using the guides posted..
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Old June 5th, 2013, 10:50 PM
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Quote:
Originally Posted by o2batsea View Post
Nah, 93 110 is 14CUX, not OBD. The only codes that elicit a CEL are for bad O2 sensors. You have either one two or both inoperative, or at least failing to send a voltage that the ECU is happy with.
Time to replace them.
There is also that nasty old maintenance interval lamp that comes on too. You sure it's not that light? That one can be manually reset by you with a paper clip.

To answer the question though, yes there is a way to read the codes with a laptop and an interface cable (that you have to make yourself) I sleazed off Galpin's setup last time I needed to check for faults cz I'm too lazy to take the plastic cover off the seat base.
The cable is a couple bucks worth of Radio shack/britishwiring parts and the software is a free download. If you are a 14CUX driver, it is very handy to have the app and the cable.
Link to all that shyte is: https://code.google.com/p/rovergauge/
Lots of things throw a CEL on a 14CUX and yes rover gauge is bloody awesome.
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  #20  
Old June 5th, 2013, 11:13 PM
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Two O2 sensors can be had for $200 for the pair or so plug and play. If you have over 80k, worth replacing and then see what happens.
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