Throttle/Pedal Position Sensor A Range/Performance
Powertrain Code · High
What does P0121 mean?
The TPS is reading outside expected parameters for the current conditions.
System: Throttle
P0121 is a powertrain diagnostic trouble code indicating throttle/pedal position sensor a range/performance. This code is classified as high severity, which means: address soon — may cause further damage. We have vehicle-specific diagnostic data for 43 models below. Select your vehicle for tailored causes, symptoms, and repair cost estimates.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.
See causes, symptoms, and repair costs for P0121 on specific vehicles: