Posts Tagged: throttle position sensor
P0120 Code: What It Means and How to Fix It Fast
P0120 Code: Diagnosis and Repair Guide Quick Summary A P0120 code is defined as: Throttle/Pedal Position Sensor ‘A’ Circuit. It means the engine computer is having trouble trusting the data from one of the throttle position sensors (TPS). The throttle position sensors tell the computer exactly how far the throttle plate is open. When that signal becomes inaccurate, inconsistent, or out of range, the computer sets the P0120 code and may put the vehicle into reduced-power or limp mode. The most common causes of a P0120 code are a failing … Read More
Throttle position sensor TPS
Diagnose and replace throttle position sensor TPS What does a throttle position sensor do? A throttle position sensor is a potentiometer that changes voltage as it moves. It’s tells the ECM how far the driver is opening the throttle. In older vehicles it’s mounted right on the throttle body. However, in newer cars, the TPS is located right on the gas pedal inside the cabin. The manufacturers eliminated the cable to the throttle body and rely instead on stepper motors to open and close the throttle plate. What goes wrong … Read More