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P1128 Diagnostic Trouble Code Discussion for August 2007

Closed Loop Fueling Not Achieved - Bank 1

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Trouble Ticket Help Requests for DTC P1128
Help Request Posted
1999 Volkswagen Jetta GLS 2.0L Poor Idle Quality VIN: 3VWSA29M3X
P1128: Missfire detected with low idle. vechicle came to shop for failed smog due to check engine light. found vacuum leaks at line to fuel pressure regulator - replaced, dipstick tube - replaced, and brake booster - replaced. Cleared codes and now vehicle is barely driveable ??
August 09, 2007