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P1129 Diagnostic Trouble Code Discussion for October 2010

Closed Loop Fueling Not Achieved (Bank 2)

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Trouble Ticket Help Requests for DTC P1129
Help Request Posted
1998 Porsche Boxster 2.5L Hesitation, MIL Lamp on VIN: WP0CA2982W
P1129: Adaptation close to full load mixture too rich B2. This car was in about 700 miles ago with a check engine light on and hesitation and bucking around 60 mph. "Fixed" the car and all seemed well till today. The two codes it had before came back and I'm now chasing my tail. The check engine light was not...
October 11, 2010