× 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

P1121 Diagnostic Trouble Code Discussion for October 2007

Electronic Throttle Control Actuator Malfunction


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 P1121
Help Request Posted
1999 Oldsmobile Alero GLS 3.4L No Start, Poor Idle Quality, Stall VIN: 1G3NF12E0X
P1121: TP Sensor Circuit Intermittent High Voltage. This car has a whole host of symptoms that occur intermittently. At times it won't start, or dies when running. Sometimes it idles normally, other times it idles above 2500 rpm. It had a whole list of codes when we first got it in, and the ones I listed return...
October 18, 2007