P2105
PowertrainElectronic Throttlecritical severityThrottle Actuator Control System Forced Engine Shutdown
What P2105 Means
ECM shut down the engine due to a critical electronic throttle control fault.
Symptoms
- Engine stalls and won't restart
- Check engine light
- Multiple warning lights
Common Causes
- Severe throttle control fault
- APP sensor failure
- Critical wiring damage
- ECM hardware failure
Diagnostic Steps
- Check for other DTCs
- Inspect APP sensors
- Check throttle body
- Verify ECM power and grounds
Where to start: Diagnose root cause immediately. This indicates a safety-critical throttle system failure.
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Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
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Serious DIY~$100
BlueDriver Pro →
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SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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