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DTC P2231

My coworker gotten a check engine light this past weekend while driving his 2005 BMW 325 down the freeway at 80 MPH. The check engine light later disappeared. But he borrowed my Actron OBD II AutoScanner CP9175 and got the following code:


O2 Bank 1 Sensor 1
Signal CKT Shorted
To Heater CKT

Anyone know what could have caused this code? Or what this code means? If I find out any more, I'll update this thread.

Chieh Cheng
Tue, 15 Jul 2008 21:02:42 +0000

Your friend has a bad oxygen sensor.

Riley Babcock
Wed, 04 Mar 2009 18:07:14 +0000

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