Throttle Actuator A Control Module Processor
What it means
P2107 means the throttle actuator control module (the drive-by-wire "brain" that moves the throttle plate) has detected an internal processor fault. Because the module can no longer trust its own throttle control, the PCM usually commands reduced-power or limp mode as a safety measure, so the engine feels sluggish and unresponsive.
Can I keep driving? Drive gently and get it looked at soon — this usually forces the engine into reduced-power or limp mode, so acceleration and highway merging can be unsafe.
Real-world scan data
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check-engine light on
- Reduced engine power / limp (failsafe) mode
- Poor or unresponsive throttle response
- Rough, high, or erratic idle
Common causes
Most likely first
- Internal fault in the throttle actuator control (TAC) module or PCM processorLikely
- Corroded or loose connectors / damaged wiring to the throttle bodyCommon
- Faulty throttle actuator motor or throttle body assemblyCommon
- PCM software fault requiring a reflash or updateLess often
How to diagnose & fix
Work through it in order
- Scan for companion throttle codes (P2101-P2112) and read freeze-frame data to see the conditions when it set.
- Inspect and clean the throttle body, then clear the code and re-test — a sticking plate can trip the processor's self-check.
- Check the throttle-body connector and wiring for corrosion, bent pins, and good power/ground.
- Check for a PCM/TAC module software update or TSB for the vehicle.
- If the fault is internal to the module, replace or reprogram the TAC module / PCM as specified.
FAQ
Quick answers
Is it safe to drive with P2107?+
Can I just clear P2107?+
Related codes
Read & clear P2107 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.