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How can I repair the P1131 code on my 2001 Pontiac Sunfire?

Vehicle: 2001 Pontiac Sunfire

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Hi there

This code can be the result of a faulty O2 sensor or a problem with some type of vacuum leak.

P1131 PONTIAC - HO2S Circuit Low Variance Bank 1 Sensor 2

Read more: https://www.autocodes.com/p1131_pontiac.html

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