P0122 mercedes. 20 volts (V). Second, debris or torn up floor mats often block and gum up the pedal Feb 10, 2025 · The iCarsoft CR MAX & CR Eagle are scanner obd ii tools and fixed car scanners that can diagnose the Mercedes Benz P0122 throttle actuator control system. The TPS monitors the throttle valve’s position, sending this data to the ECM for fuel delivery and ignition timing optimization. This is one of the most frequent OBD2 trouble codes. The sensor sits on the throttle body in most configurati Jan 5, 2026 · When you have a code P0122, you can often narrow down the problem to one of three things. These sensors tell the engine control module (PCM) how fast the driver wants to go and how quickly it needs to get up to speed. Make: Mercedes-Benz Code: P0122 Definition: Throttle/Pedal Position Sensor/Switch A Circuit Low Input Description: Throttle valve actuator (actual value potentiometer 1 - short circuit to ground). Also includes links to other forum threads discussing the code. Jul 9, 2024 · Use an OBD-II scanner to confirm the P0122 code and check for any additional codes. This sensor is essential for engine management, as it monitors the position of the throttle valve and communicates with the Engine Control Module (ECM) so that it can adjust the air-fuel mixture and ignition timing accordingly. Definition Throttle Pedal Position Sensor /Switch (TPS) A Circuit Low Input Meaning Pulling a P0122 trouble code on your OBDII scanner occurs when the Engine Control Module (ECM) registers a reading below 2 volts from Throttle Pedal 📌 OBD-II Fehlercode P0122 einfach und verständlich erklärt! Hast du Probleme mit deinem Fahrzeug und der OBD-II Fehlercode P0122 taucht auf? Kein Problem! In diesem Video zeigen wir dir, was Mercedes Accelerator Pedal Potentiometer P0122 TPS Fault Code and the Fix on C-Class, E-Class, S-Class, CLK Class 2002 - 2010 In this video, I'll help you fix the Mercedes P0122 TPS Fault Code. OBD Fehlercode P0122 Ursachen, Symptome, Reparatur & Kosten BMW, Mercedes, VW, Hyundai & Co. Apr 17, 2024 · At present, the P0122 DTC is a common fault code that indicates an issue with the TP sensor in a Mercedes vehicle. Inspect the throttle body for carbon buildup or sticking. Read the full article below to know what it means, how to fix it, and what other codes may show related to it. Sep 9, 2019 · Repair Information for P0122 Mercedes-Benz code. On some vehicles that lower limit is 0. The P0122 code indicates that your PCM has detected that the signal coming from the throttle position sensor A is lower than the specified limit. The P0122 trouble code signifies that the throttle position sensor or switch A circuit has a lower input than expected. Cause: Circuits and connectors: - Short circuit to ground Throttle valve actuator Circuits and connectors: - Short circuit to ground Throttle valve What causes OBD-II fault code P0122? The Throttle Position Sensor/Switch is located on the Throttle Body of the Intake Manifold and the Pedal Position Sensor/Switch is part of the Accelerator Pedal assembly. 17 – 0. Check the sensor’s voltage output using a multimeter. P0122 – Drosselklappen-Potentiometer May 27, 2024 · Diagnostic Trouble Code (DTC) P0122 stands for “Throttle Position Sensor/Switch A Circuit Low Input. Dec 27, 2025 · Code P0122 Description When your vehicle’s onboard computer, the Engine Control Module (ECM), detects a problem with the Throttle Position Sensor (TPS) 1 circuit, it triggers the P0122 trouble code. . Visually inspect the throttle position sensor and its wiring for damage or loose connections. The code tells you that there is a problem with the reading come from the sensor or switch, and often the problem is just that. This sensor is responsible for monitoring the position of the throttle pedal and communicating this information to the engine control module (ECM). Detailed information on how to diagnose and fix a check engine light code P0122 throttle position sensor. A low voltage in the TP sensor circuit typically A P0122 Mercedes code means that the the car’s computer has detected that the TPS (throttle position sensor) is reporting too low a voltage. Aug 30, 2024 · When the diagnostic code P0122 appears on a Mercedes-Benz vehicle, it indicates that there is a low input signal coming from the throttle/pedal position sensor or switch 'A'. The PCMis responsible for logging this code when the input doesn’t mean normal parameters. The throttle position sensor is tasked with tracking the position of the throttle. Learn what Throttle/Pedal Position Sensor/Switch 'A' Circuit Low Input means, location and how to repair. Feb 10, 2025 · The iCarsoft CR MAX & CR Eagle are scanner obd ii tools and fixed car scanners that can diagnose the Mercedes Benz P0122 throttle actuator control system. Check the ECM for any signs of damage or corrosion. ” The powertrain control module (PCM) logs a P0122 code when the throttle position sensor “A” displays lower voltage than normal. First, you might have a faulty throttle position sensor /switch or a faulty pedal position sensor/switch. Dec 23, 2025 · Understand the P0122 throttle code, diagnose its low voltage signal, and follow our step-by-step guide to repair or replace the faulty TPS. kyhf dkin anfsyld xthgthi yiwn fue ijwnts xiwxvilj olut okdog