OBD-II code · Powertrain (generic, extended)
P2106 Throttle Actuator Control System — Forced Limited Power
The TAC monitor restricts maximum throttle opening as a safety response to a TAC fault. The vehicle can still be driven, but accelerator pedal travel is capped.
Is it safe to drive with P2106?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyUnderlying TAC fault triggers limit
- PossiblePedal position sensor signal implausible
Symptoms
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Throttle Actuator Control, Ecm
Related codes
- P2104Throttle Actuator Control System — Forced Idle
- P2105Throttle Actuator Control System — Forced Engine Shutdown
- P2103Throttle Actuator Control Motor Circuit High
- P2107Throttle Actuator Control Module Internal Processor
- P2108Throttle Actuator Control Module Performance
- P2109Throttle/Pedal Position Sensor A Minimum Stop Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.