OBD-II Generic Error Code P2108: How to Fix It

Q: Can I drive with error code P2108?

You may be able to drive, but reduced engine power and poor acceleration can make driving unsafe. It's best to diagnose and fix the issue promptly.

Q: What causes P2108?

Common causes include a dirty throttle body, faulty throttle actuator motor, damaged wiring, or a defective TAC module.

Q: How much does it cost to fix P2108?

DIY cleaning is cheap (under $20). Replacing the throttle body assembly can cost $100-$400. Professional diagnosis and repair may be $200-$600.

Q: Will a throttle body cleaning fix P2108?

Often yes, if carbon buildup is causing the actuator to stick. It's a good first step before replacing parts.

Q: What does TAC module mean?

TAC stands for Throttle Actuator Control. It's the module that interprets the accelerator pedal position and moves the throttle plate electronically.

Abstract

Error code P2108 indicates a problem with the throttle actuator control (TAC) module performance. This module controls the electronic throttle body, and the code means the powertrain control module (PCM) has detected a fault. Common symptoms include reduced engine power, poor acceleration, and the check engine light on.