× 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

P1123 Diagnostic Trouble Code Discussion for July 2009

Throttle Position 'A' Signal In Range (But Lower Than Expected)

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 P1123
Help Request Posted
1999 Porsche Boxster 2.5L Hesitation, Poor Fuel Economy, MIL Lamp on VIN: WP0CA2980X
P1123: system at rich limit at idle cyl 1-3. Car came in with p1600 and p1123 and p1125 and a k&n. Changed filter and maf because of contamination. Fuel pressure is right at factory specs. Smoked intake found leaking oil fill pipe. Replaced pipe. LTFT was b 1 6% b 2 11% replaced oil seperator at same...
July 23, 2009