LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Chevrolet
>>
2003
>>
TrailBlazer 5.3 P, 4WD
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Control System - Self-Diagnostics - 5.3L
>>
Diagnostic Tests
>>
DTC P0120: TP Sensor Circuit
>>
Conditions For Setting DTC
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Conditions For Setting DTC
The TP sensor 1 signal voltage is less than 0.37 volt or more than 4.51 volts.
The above condition is present for more than 1 second.