Still getting "O2 sensor Malfunction" (Bank 1 Sensor1) code and "System lean" (BanK 1)

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Sep 22, 2008 | 11:53 AM

#11

Spike555

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Joined: Jun 2007

Posts: 26,212

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From: Grand Rapids MI

RE: Still getting "O2 sensor Malfunction" (Bank 1 Sensor1) code and "System lean" (BanK 1)

Bad plug wires will set off O2 codes every time.

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