Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Acura MDX BaseFACTORY OEM SERVICE PROCEDURE
DTC P2108: Throttle Actuator Control Module Problem
CAUTION:
When substituting or replacement of PCM is recommended, see PCM REMOVAL & REPLACEMENT
for important precautions.
- Turn ignition on. Using Honda PGM Tester or the HDS, do the DTC CLEAR in the CLEAR menu.
- Turn ignition off. Then turn ignition on. Check for Temporary DTCs or DTCs in the DTC menu. If DTC P2108 is set, substitute a known-good throttle body assembly and recheck. If problem is gone, replace original throttle body assembly. If DTC P2108 is not set, problem is intermittent. System is OK at this time. Check for poor connections or loose terminals at throttle actuator control module and PCM.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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