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Discussion Starter · #1 ·
SO heres the issue im driving the Car and i get 3 CEL codes P1009, P0137 and cant remember the other....basically they say the car is running lean, low voltage on PrimO2 sensor and VTC stuck in advanced position (which i thought i had fixed with oil)....so how do i stop running lean? Mods: header, test pipe, exhaust, intake
 

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, Chief SuperModerator, Info Center / Car Care & D
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I think your primary O2 sensor might be busted.

Since the ECU tries to maintain a certain air-fuel ratio through the O2 sensor, it might be that the O2 sensor is giving false information to the ECU.
 

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, Chief SuperModerator, Info Center / Car Care & D
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I have no idea on how to check it because I have never had a problem with the O2 sensor.

But changing the O2 sensor will definitely be part of my 100k mile maintenance because of the wear and tear it goes through down there (due to heat cycle). It's just a peace of mind thing that I like to do.
 
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