OBD-II Generic Error Code P0124: How to Fix It

Q: Can I drive with error code P0124?

It's not recommended because intermittent TPS signals can cause sudden acceleration, stalling, or limp mode, which is unsafe. Have it diagnosed as soon as possible.

Q: Will cleaning the throttle body fix P0124?

Yes, sometimes carbon buildup on the throttle plate or sensor can cause intermittent signals. Cleaning is a simple first step that often resolves the issue.

Q: How much does it cost to fix code P0124?

DIY cost for a TPS sensor is typically $20–$80. If a mechanic does it, expect $100–$250 including labor and diagnostics.

Q: What does TPS sensor A mean?

TPS sensor A usually refers to the main throttle position sensor on the throttle body. Some vehicles have a secondary sensor (B) for redundancy.

Q: Can a bad TPS cause transmission problems?

Yes, because the ECM uses TPS data for shift points. A faulty TPS can cause harsh shifting, delayed shifts, or limp mode.

Abstract

Error code P0124 indicates that the Engine Control Module (ECM) has detected an intermittent signal from the throttle position sensor (TPS) 'A'. This means the voltage reading from the sensor is inconsistent or out of expected range, which can cause poor acceleration, stalling, or check engine light. It's a common issue often caused by a faulty sensor, wiring problems, or a dirty throttle body.