P0121 Throttle Position Sensor/Switch A Circuit Range/Performance Problem
It often says engine power reduced and service traction control. It also has troubles shifting gears when these pop up.
P0121 Code: Meaning, Symptoms, Causes & Fixing - Mechanical …
What does the P0121 Code Mean? The P0121 code indicates that your powertrain control module (PCM) has detected that your throttle position sensor is operating outside of a programmed …
P0121 Code Meaning, Causes, Symptoms & Tech Notes
Sep 7, 2024 · The P0121 code indicates that there is a problem with the Throttle Position Sensor (TPS) 1 performance. The TPS is a crucial component of the engine management system as it …
P0121 Code: Throttle Position Sensor Issue (Symptoms and Fixes)
May 7, 2025 · One problematic electrical code is P0121, indicating faults in the throttle position circuit. Continue reading to learn what exactly causes a P0121 code to appear, whether you …
Code P0121: Throttle Position Sensor/Switch A Circuit Range ... - AutoZone
When your OBD-II sensor shows trouble code P0121, there may be an electrical issue with your throttle position sensor. Learn how to diagnose this issue and find the correct repair solution in …
P0121 Code? Here’s How to Fix It Quickly and Easily
4 days ago · Discover the underlying causes of the P0121 code, from faulty throttle position sensors to wiring issues, and learn how to diagnose and repair it.
P0121: Throttle Position Sensor Performance Problem - Edmunds
Apr 10, 2025 · What does the P0121 error code mean? The P0121 diagnostic trouble code stands for "Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem."
P0121 Code: Throttle/Pedal Position Sensor Switch A Circuit
Mar 29, 2025 · A P0121 error code is a signal that the output voltage of the throttle position sensor “A” is out of recommended range. The problem is signaled by the engine control …
P0121 - Throttle/Pedal Position Sensor/Switch "A" Circuit
Learn about P0121 symptoms, causes, and potential solutions from the diagnostic experts at RepairPal.
P0121: Should You Keep Driving? What It Means & How To Fix
Mar 3, 2022 · When code P0121 occurs, it means that your Engine Control Module (ECM) recognized that your throttle position “A” circuit’s expected output voltage has either gone …