× 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

P2121 Diagnostic Trouble Code Discussion for May 2015

Accelerator Pedal Position Sensor 1 Performance

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 P2121
Help Request Posted
2004 Lexus ES330 3.3L Hesitation VIN: JTHBA30G44
P2121: Throttle Pedal Position Sensor/Switch 'D' Circuit Malfunction. Code 2121 set and vehicle went into limp mode with very little throttle response. Ran fine before the check engine light came on and the traction control and stability icons illuminated. The electronic throttle control sensor is $800 and the accelerator pedal ...
May 29, 2015