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Old March 9th, 2004, 05:39 PM
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Troy Smith
1995 D90 SW
Join Date: Oct 2003
Location: Roanoke, VA, USA
Posts: 254
Question Fault Code 15

I had my 95 D90 SW diagnosed today and it came up Fault Code 15 - Fuel Thermistor. Can this cause the catalytic convertor to blow out? My check engine light came on, fuel mileage went to heck, then cat pieces started coming out the tailpipe. I thought for sure it would end up being a bad HO2 Sensor.

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Old March 9th, 2004, 06:21 PM
Mike Hippert's Avatar
Mike Hippert
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94 D-90 Grinding Rover
Join Date: Sep 2003
Location: Manchester NH USA
Posts: 4,789

The Fuel Thermistor tells the ECU what the temp of the Fuel is, I can't see this causing the Cats to blow up.

Cats die all on there own when they get clogged up, then your gas mileage goes to down and then the insides break up and come out the back just like you said.

I would try resetting the ECU after you check all the codes and watch too see if more codes come back. If they do come back check here


to get a better idea about what they mean. I have often had codes come up that did not return after I reset the ECU.
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