× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P1128 Diagnostic Trouble Code Discussion for April 2005

Closed Loop Fueling Not Achieved - Bank 1

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1128
Help Request Posted
2001 Volkswagen Jetta GL 2.0L Excessive Emissions, MIL Lamp on VIN: 3VWR529M61
P1128: manufacturer controlled fuel and air metering. ... for this problem. the first time sensor 1 was not switching. we replaced the front o2 sensor and all fuel trim values returned to normal and the o2 was switching properly. now the vehicle has returned with a p1128 as a cur...
April 04, 2005
2001 Volkswagen Cabrio GLS 2.0L MIL Lamp on VIN: 3VWCC21V51
P1128: VAG17536 LTFT too lean bank one. ... water pump and tires on out of state car. Came back 2 days later with CEL. We're not sure if CEL was on before or not, owner not real clear on this. Code P1128 LTFT too lean (VAG 17536). I checked all vacuum lines for leaks/damage, none found. I double che...
April 19, 2005
1999 Volkswagen Jetta GLS 2.0L Hesitation VIN: 3VWSC29M7X
P1128: Long term fuel trim-system too lean. Customer dropped off vehicle and complained about poor running and a real bad hesitation. Verified complaint. Secondary ignition wires were arcing all over. Replaced ignition wires and throughly cleaned coil pack assembly. Checked coolant temp sensor-was readi...
April 25, 2005