OBD-II code · Powertrain (generic, extended)
P2107 Throttle Actuator Control Module Internal Processor
The internal processor or watchdog of the throttle actuator control module reports an internal fault. Communication between the TAC monitor core and the main ECU core has failed plausibility — typical for a defective ECU.
Is it safe to drive with P2107?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyECU internal processor fault
- Less likelyECU software flash corrupted
- Less likelyModule software outdated, reflash may resolve
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
- Ecm
Related codes
- P2104Throttle Actuator Control System — Forced Idle
- P2105Throttle Actuator Control System — Forced Engine Shutdown
- P2106Throttle Actuator Control System — Forced Limited Power
- P2108Throttle Actuator Control Module Performance
- P2109Throttle/Pedal Position Sensor A Minimum Stop Performance
- P210AThrottle Actuator B Control Motor Circuit/Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.