Mercedes Benz

Okay, let's break down those OBD-II trouble codes related specifically to your Porsche and its Throttle Position Sensor (TPS). These codes indicate issues with the signal from your throttle position sensor. **Porsche Diagnostic Trouble Code: P0122** *   **What it means:** This code indicates that the Powertrain Control Module (PCM) has detected an input voltage or resistance value from the Throttle Position Sensor on the *closed throttle opening angle* side of the switch point. It interprets this as a signal suggesting the engine is in a "partially open" throttle position when it should be closed, or that there's no valid signal detected for Porsches during certain conditions (like startup). *   **The Sensor:** The TPS sensor measures how far your Porsche's throttle butterfly valve is open. This tells the PCM whether you're idling, accelerating, decelerating, etc., which it uses to control fuel injection and ignition timing precisely in Porsche's sophistic...