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  #1  
Old July 26th, 2006, 07:57 PM
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nate
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Question OBD1 question

So I have a 1995 D90 and the "check engine" light came on. I have tried unplugging the battery to reset it a couple of times now, but it keeps comming back on. I have looked for an OBD1 display/ plug, and havn`t found anything. So how do I find out why the light came on, and then how do I reset it? Any help would be appreciated.
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  #2  
Old July 26th, 2006, 08:04 PM
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check under the passenger seat in the seat box, there should be a monitor, if it is not there then you can usually get one for around 10bucks. Once you know the problem, and eliminate it the light will go away.
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  #3  
Old July 26th, 2006, 08:25 PM
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nate
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Awesome, thanks. I never noticed that that was a display because I have never looked at it while the truck has been running.

So any word on what "45" means? "Impending Death", I would assume knowing my luck
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  #4  
Old July 26th, 2006, 09:19 PM
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Dave Souza
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From http://www.robisonservice.com/servic...r_trouble.asp:

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.

(a lambda sensor is an O2 sensor)
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  #5  
Old July 26th, 2006, 10:17 PM
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what are the miles what have you done to the truck
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  #6  
Old July 27th, 2006, 01:55 AM
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I just broke 73,000 miles, and as far as what i`ve done to the truck? Where should I start... $10k worth of work within the past year. I`ll try playing with the O2 sensors and see what the outcome is and go from there. Thanks for the replies
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  #7  
Old July 27th, 2006, 03:12 AM
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that would be just the right side sensor. Check the condition of the wiring first, and clean the connector before worrying about a replacement just yet.

-Hans
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