OBD-II Diagnostic Trouble Code
P0121
Throttle/Pedal Position Sensor/Switch “A” Circuit Range/Performance
P
Powertrain
engine / trans
engine / trans
0
Generic
SAE standard
SAE standard
1
Fuel & air metering
21
Throttle/Pedal Position Sensor/Switch “A” Circuit Range/Performance
Severity · general guide
Moderate
Fix soon — usually won't strand you
Code type
Ram
System
Powertrain
Model
RAM 1500
Years
2002-2008