P1221 Diagnostic Trouble Code Discussion for February 2006
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 | |
| 2002 Chevrolet Trailblazer LS 4.2L throttle VIN: 1GNDT13S02 P1221: TP Sensor 2 1-2 Correlation. ... with fault codes (P1221 excessive difference between throttle position sensors, P1271 excessive difference between acceleator pedal position sensors, P1635 5v ref. A circuit) The first time when testing, fan clutch circui... |
February 18, 2006 |
