Mike's Workshop Manuals
: Service manuals for every vehicle
Home
>>
Cadillac
>>
2006
>>
STS Base, 3.6 7, AWD
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Control System - 3.6L - DTC P0008 To P0128
>>
DTC P0121
>>
Conditions for Running the DTC
Conditions for Running the DTC
The ignition 1 voltage is more than 7 volts.
The TP sensor 1 voltage is between 0.17-4.6 volts.
DTC P0121 runs continuously once the above conditions are met.