× 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

P0170 Diagnostic Trouble Code Discussion for May 2012

Fuel Trim Lean Or Rich (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 P0170
Help Request Posted
2001 Volkswagen Beetle GLX 1.8L MIL Lamp on VIN: 3VWDD21C31
P0170: Fuel trim bank 1. We have performed aging tests of oxygen sensors, B1S1 fails, B1S2 passes. The Lambda reading at 1.2-1.4v at idle is our question. What should Lambda reading be at idle? Like I said, we have read the posts & can see that there are several items that may cau...
May 01, 2012