Check engine code P140

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Mar 28, 2006 | 10:20 PM

teal854t

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Joined: Mar 2006

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Check engine code P140

P140: Bad O2 Bank1 Sensor2. What does it mean by bank1 sensor2

Mar 29, 2006 | 01:39 AM

kdh97602

Professional

Joined: Sep 2005

Posts: 149

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From: LA, CA

RE: Check engine code P140

bank 1 = side where the #1 cylinder is
sensor 2 = second sensor in line; depending on the vehicle, its the one behind the cat.

Mar 30, 2006 | 11:02 PM

Chump

Captain

Joined: Sep 2005

Posts: 550

Likes: 1

From: Colorado

RE: Check engine code P140

Usually turns out to be a bad cat, if that's the sensor behind it.
What year, model and engine?

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