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P1128 Diagnostic Trouble Code Discussion for May 2009

Closed Loop Fueling Not Achieved - Bank 1


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Trouble Ticket Help Requests for DTC P1128
Help Request Posted
2001 Audi TT 1.8L Hesitation, MIL Lamp on VIN: TRUWX28N91
P1128: bank 1 adaptation mixture to lean. engine code awp, hello, this vehical misses out and hesitates under load sometimes. has 3 codes 1297,1137, 1128. car is running fine today but if anyone has any info or direction on what to look for would help out greatly thank you
May 01, 2009
2001 Volkswagen Passat GLX 2.8L Misfire, MIL Lamp on VIN: WVWBH63B01
P1128: Long term fuel trim B1 too lean. This car is killing us, I believe it had compound problems, and we are chipping away at them, but this misfire is really puzzling, the new parts are listed above, also, the oil pressure is good(29 psi at idle and 55 psi at 2,000 rpm), fuel pressure within spec...
May 04, 2009
2001 Volkswagen Passat GLX 2.8L Misfire, MIL Lamp on VIN: WVWBH63B01
P1128: Long term fuel trim B1 too lean. This car is killing us, I believe it had compound problems, and we are chipping away at them, but this misfire is really puzzling, the new parts are listed above, also, the oil pressure is good(29 psi at idle and 55 psi at 2,000 rpm), fuel pressure within spec...
May 12, 2009
2001 Volkswagen Jetta GLS 2.0L MIL Lamp on VIN: 3VWSS29M81
P1128: bank one lean. ... no driveability symtons other shop replaced two o2 sensors and vehicle still gets same code p1128 i have checked for vacumn leaks with no findings thankyou for your help in advance
May 30, 2009