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P1128 Diagnostic Trouble Code Discussion for May 2005

Closed Loop Fueling Not Achieved - Bank 1


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Trouble Ticket Help Requests for DTC P1128
Help Request Posted
1999 Volkswagen Jetta GL 2.0L Poor Idle Quality VIN: 3VW5C29M4X
please help. car came in as a "someone gave me the car" car will not idle cold or accel. cold. if you add fuel it will run and accel. if i pinch the return hose it will idle. performed much needed complete tune up, didnt like f/p so i replaced the pump...
May 04, 2005
1999 Volkswagen Jetta GL 2.0L Poor Idle Quality VIN: 3VW5C29M4X
please help. car came in as a "someone gave me the car" car will not idle cold or accel. cold. if you add fuel it will run and accel. if i pinch the return hose it will idle. performed much needed complete tune up, didnt like f/p so i replaced the pump...
May 07, 2005
1999 Volkswagen Beetle GL 2.0L Hesitation, No power VIN: 3VWBB61C3W
P1128: Long term fuel trim mult. bank 1 system too lean. This vehicle experiences an extreme bog and hesitation on acceleration to the point where the car basically doesn't go anywhere. The problem is very bad when cold and tolerable when warm. We have done the following procedures with no solution... Run fault cod...
May 10, 2005
1999 Volkswagen Jetta GLS 2.0L Hesitation, Cuts out VIN: 3VWSC29M0X
P1128: long term fuel trim too lean. ... service lof,state inspection and "throw in a set of plugs" while driving the vehicle in i saw the mil light was on here in mass that means it will fail the obd2 check. the oil was changed the plugs were replaced with bosch plugs {double platinums}...
May 13, 2005
2000 Volkswagen Jetta GLX 2.8L MIL Lamp on VIN: 3VWTE29MXY
P1128: long term fuel trim too lean. car here from car lot. tested o2 senors seem ok oil clean no vacum leaks detected. anyone know of a comon point of failure to cause this code.
May 17, 2005
2001 Volkswagen Jetta GLS 2.0L MIL Lamp on VIN: 3VWST29M91
P1128: up steam o2. ... on about a month ago pulled code p1128 (upstream O2 Lean). checked for vacume leaks found none so I cleared the code and sent them on their way. This week the light came on again pulled the same code p1128 again. Checked the database found that MAF is very...
May 26, 2005
1999 Volkswagen Jetta GL 2.0L Poor Idle Quality VIN: 3VW5C29M4X
please help. car came in as a "someone gave me the car" car will not idle cold or accel. cold. if you add fuel it will run and accel. if i pinch the return hose it will idle. performed much needed complete tune up, didnt like f/p so i replaced the pump...
May 04, 2005
1999 Volkswagen Jetta GL 2.0L Poor Idle Quality VIN: 3VW5C29M4X
please help. car came in as a "someone gave me the car" car will not idle cold or accel. cold. if you add fuel it will run and accel. if i pinch the return hose it will idle. performed much needed complete tune up, didnt like f/p so i replaced the pump...
May 07, 2005
1999 Volkswagen Beetle GL 2.0L Hesitation, No power VIN: 3VWBB61C3W
P1128: Long term fuel trim mult. bank 1 system too lean. This vehicle experiences an extreme bog and hesitation on acceleration to the point where the car basically doesn't go anywhere. The problem is very bad when cold and tolerable when warm. We have done the following procedures with no solution... Run fault cod...
May 10, 2005
1999 Volkswagen Jetta GLS 2.0L Hesitation, Cuts out VIN: 3VWSC29M0X
P1128: long term fuel trim too lean. ... service lof,state inspection and "throw in a set of plugs" while driving the vehicle in i saw the mil light was on here in mass that means it will fail the obd2 check. the oil was changed the plugs were replaced with bosch plugs {double platinums}...
May 13, 2005
2000 Volkswagen Jetta GLX 2.8L MIL Lamp on VIN: 3VWTE29MXY
P1128: long term fuel trim too lean. car here from car lot. tested o2 senors seem ok oil clean no vacum leaks detected. anyone know of a comon point of failure to cause this code.
May 17, 2005
2001 Volkswagen Jetta GLS 2.0L MIL Lamp on VIN: 3VWST29M91
P1128: up steam o2. ... on about a month ago pulled code p1128 (upstream O2 Lean). checked for vacume leaks found none so I cleared the code and sent them on their way. This week the light came on again pulled the same code p1128 again. Checked the database found that MAF is very...
May 26, 2005