Just failed emmissions:(

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flowbee240
Posts: 11
Joined: Tue Apr 27, 2004 6:38 am

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The OBD said I was not ready, and gave me 3 trouble codes:

P0130 O2 Sensor circuit malfunctionP0325 Knock Sensor 1 Circuit MalfunctionP1900 Manafacturer Controlled Category

Does anyone have any insight that could help me out here? The car is running fine, and im not sure what I need to do. Im hoping I dont have to replace these three things, because its been an intermittent problem in my car, but I will if I have to. Anyone have any advice? Thanks guys.

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Nismo_Freak
Posts: 10314
Joined: Wed Jul 24, 2002 10:42 pm
Car: 89 Nissan 240SX

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Hmm... verify your timing is set to 20 deg. +/- 2 deg. Also, replace the 02 sensor.
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