P0120 on Renault
Throttle/Pedal Position Sensor Circuit Malfunction
P0120 on Renault vehicles indicates throttle/pedal position sensor circuit malfunction. Au7o has documented this code across 1 Renault model — most commonly on Megane. This code indicates a malfunction in the throttle position or accelerator pedal position sensor circuit. These sensors tell the computer how far the throttle plate is open or how far you've pressed the pedal, which the computer uses to control engine power and, on drive-by-wire systems, the throttle itself. When the signal is out of range, erratic, or doesn't make sense relative to other inputs, P0120 sets. Symptoms can include hesitation, surging, stalling, or the vehicle entering a reduced-power 'limp' mode for safety. Typical repair costs on Renault range from $100 to $500, depending on the specific model and root cause.
Common Causes of P0120
- •Failed throttle position sensor
- •Corroded or loose TPS/pedal sensor connector
- •Damaged or shorted sensor wiring
- •Carbon buildup or a sticking throttle body
- •Worn throttle body or throttle plate
- •Poor sensor reference voltage or ground
- •Faulty accelerator pedal position sensor
- •Faulty PCM/ECM (rare)
P0120 on Renault by Model
Renault Megane(1 issue)
- Injection System Fault Warning2003-2023
The Megane displays an "Injection Fault" warning on the dashboard, which can be triggered by numerous sensors and components. Common causes include the crankshaft position sensor, throttle body, and fuel pressure regulator.
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View P0120 across all makes →Frequently Asked Questions
What does P0120 mean on Renault?▼
P0120 stands for "Throttle/Pedal Position Sensor Circuit Malfunction." This code indicates a malfunction in the throttle position or accelerator pedal position sensor circuit. These sensors tell the computer how far the throttle plate is open or how far you've pressed the pedal, which the computer uses to control engine power and, on drive-by-wire systems, the throttle itself. When the signal is out of range, erratic, or doesn't make sense relative to other inputs, P0120 sets. Symptoms can include hesitation, surging, stalling, or the vehicle entering a reduced-power 'limp' mode for safety. On Renault specifically, this code is documented across 1 model.
What causes P0120 on Renault vehicles?▼
Common causes on Renault: Failed throttle position sensor, Corroded or loose TPS/pedal sensor connector, Damaged or shorted sensor wiring, Carbon buildup or a sticking throttle body, Worn throttle body or throttle plate. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0120 on a Renault?▼
Repair costs on Renault range from $100 to $500, depending on the specific model and root cause.
Which Renault models have P0120 documented?▼
Au7o has documented P0120 on 1 Renault model: Megane.