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Old 08-03-2007, 09:55 AM   #1
red87tll
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Default 97 sc2 throwing codes

1997 sc2 twin cam, 260k.

throwing codes:

p0141 o2 sensor heater circuit malf.

p0452 Evap emissions control sys. press. sensor low.


I have replaced that gas cap and the rear o2 sensor. its still throwing codes.


any other clues? would a bad fuel filter cause the evap code?

thanks
--James

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Old 08-03-2007, 09:32 PM   #2
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Default Re: 97 sc2 throwing codes

For the HO2S have you checked all of the fuses? Specifically the EGR fuse. Have you checked to see if you are getting key on power to the HO2S? Should be on the pink wire. Ground on the black/white wire?


P0452 could be the sensor on the fuel tank or bad wiring. This code should not be able to be set by a leaking evap system.

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