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P1128 Diagnostic Trouble Code Discussion for July 2012

Closed Loop Fueling Not Achieved - Bank 1


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Trouble Ticket Help Requests for DTC P1128
Help Request Posted
2008 Dodge Grand Caravan SE 3.3L MIL Lamp on VIN: 2D8HN44H88
P1128: Closed loop fueling not achieved. This van is driven by serveral different employees of a transportation company. About every 3 to 4 weeks the ses light pops on with this code. Once it had been idling for over 1/2 an hour. Once it was at a stop light. No drivability symptoms reported. We canno...
July 11, 2012
1999 Porsche 911 Carrera 3.4L MIL Lamp on VIN: WP0AA2992X
P1128: Oxygen sensing adaptation idle range bank 1. Need some help from the Porsche experts as I do not work on many of them. New customer came in with this car. CEL is on with listed codes. He recently had all 4 oxygen sensors replaced elsewhere for the CEL along with the A/C compressor. CEL came back on sho...
July 21, 2012
2008 Dodge Grand Caravan SE 3.3L MIL Lamp on VIN: 2D8HN44H88
P1128: Closed loop fueling not achieved. This van is driven by serveral different employees of a transportation company. About every 3 to 4 weeks the ses light pops on with this code. Once it had been idling for over 1/2 an hour. Once it was at a stop light. No drivability symptoms reported. We canno...
July 11, 2012
1999 Porsche 911 Carrera 3.4L MIL Lamp on VIN: WP0AA2992X
P1128: Oxygen sensing adaptation idle range bank 1. Need some help from the Porsche experts as I do not work on many of them. New customer came in with this car. CEL is on with listed codes. He recently had all 4 oxygen sensors replaced elsewhere for the CEL along with the A/C compressor. CEL came back on sho...
July 21, 2012