P2118 Fault Code

Throttle Actuator Control Motor Current Range/Performance

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2118 fault code indicates that there is a problem with the throttle actuator control motor current range or performance. This code is part of the vehicle's onboard diagnostic system and indicates that the electronic control unit (ECU) has detected a malfunction in the throttle actuator system.

• The throttle actuator is responsible for controlling the amount of air entering the engine, which affects engine performance and emissions.
• This issue can lead to poor engine performance, stalling, or difficulty accelerating.
• It is important to address this fault code promptly to ensure optimal engine operation and safety.

What are the symptoms of the P2118 code?

Drivers experiencing the P2118 fault code may notice the following symptoms:

• Reduced engine performance, including hesitation during acceleration.
• Illuminated check engine light on the dashboard.
• Stalling or rough idling, which can affect vehicle driveability.
• Unusual throttle response, such as delayed acceleration or sudden surges.

What causes the P2118 code?

Several factors can contribute to the P2118 fault code, including:

• A faulty throttle actuator motor that cannot respond correctly to ECU commands.
• Issues with the wiring or connectors related to the throttle actuator, leading to poor electrical connections.
• A malfunctioning accelerator pedal position sensor that may send incorrect information to the ECU.
• Software issues in the ECU that may misinterpret the performance of the throttle actuator.

How to fix P2118?

To resolve the P2118 fault code, follow these steps:

• Use an OBD-II scanner to confirm the presence of the code and check for additional related codes.
• Inspect the throttle actuator for signs of physical damage or electrical issues.
• Examine all related wiring and connectors for corrosion, loose connections, or fraying.
• Test the throttle actuator motor to ensure it operates within specifications and replace it if faulty.
• Consider reprogramming or updating the ECU if software issues are suspected.
• Clear the fault code and test drive the vehicle to ensure the issue is resolved.