× 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

P1221 Diagnostic Trouble Code Discussion for December 2004

TP Sensor 2 Signal Correlation

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 P1221
Help Request Posted
1999 Pontiac Firebird 3.8L MIL Lamp on, limited power VIN: 2G2FS22K5X
P1221: TP Sensor 1 2 Performance. ... problem that of course won’t act up when we have the vehicle. The “reduced engine power" light comes on along with the MIL lamp. Code P1221a (TP sensor 1-2 performance) is set in memory. The problem has occurred twice in the past few days with the c...
December 14, 2004