What causes a P2106 code?

P2106 can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a P2106 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P2106 active.

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

OBDIY

OBD-II

P2106

Throttle Actuator Control System - Forced Limited Power

What it means

The Engine Control Module (ECM) has detected a malfunction in the throttle actuator system, forcing the vehicle into a ‘limp home’ mode to prevent engine damage as a safety precaution.