P2105 Fault Code

Throttle Actuator Control System Forced Engine Shutdown

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

The P2105 fault code indicates that there is an issue with the throttle actuator control system, which has triggered a forced engine shutdown to prevent potential damage or unsafe driving conditions. This code is often associated with problems in the throttle body or related electronic controls, leading the vehicle's computer to disable the throttle to ensure safety.

What are the symptoms of the P2105 code?

Symptoms associated with the P2105 fault code may include:

• Engine stalling or failure to start
• Reduced engine power or inability to accelerate
• Illuminated check engine light on the dashboard
• Unusual engine noises or vibrations while attempting to accelerate
• Throttle response lag or erratic behavior

What causes the P2105 code?

Common causes of the P2105 fault code include:

• Faulty throttle body or motor
• Malfunctioning throttle position sensor (TPS)
• Electrical issues, such as short circuits or disconnections in the harness
• Problems with the engine control module (ECM)
• Accumulated dirt and debris in the throttle body, affecting its operation

How to fix P2105?

To resolve the P2105 fault code, consider the following steps:

• Inspect the throttle body for physical damage or obstructions, and clean if necessary.
• Test the throttle position sensor and throttle actuator motor for proper function, replacing them if defective.
• Check all wiring and connectors for signs of wear, corrosion, or loose connections.
• Clear the fault code and take the vehicle for a test drive to confirm that the issue is resolved.
• In cases where the problem persists, further diagnostics with a professional mechanic may be needed to examine the ECM and associated systems.