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P1128 Diagnostic Trouble Code Discussion for May 2010

Closed Loop Fueling Not Achieved - Bank 1

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Trouble Ticket Help Requests for DTC P1128
Help Request Posted
2000 Volkswagen Jetta GL 2.0L Excessive Emissions, Poor Idle Quality, Stall VIN: 3VWSS29M21
P1128: O2 sensor. Hi, every one car came in on hook, needad battery and fuel pump and filter . We installed them all, now car start, very poor idle! when accelerating falling on her face!! reman air flolow sensor did not help, when we disconnecting mass air fllow sensor...
May 01, 2010