P2102
PowertrainElectronic Throttlecritical severityThrottle Actuator Control Motor Circuit Low
What P2102 Means
Low voltage detected on the electronic throttle motor drive circuit.
Symptoms
- Limp mode
- Very limited throttle response
- Check engine light
Common Causes
- Short to ground in motor circuit
- Damaged wiring harness
- Corroded pins
- Internal motor short
Diagnostic Steps
- Measure voltage at throttle body connector
- Check wiring for chafing/shorts
- Test motor winding resistance
Where to start: Repair short circuit or replace throttle body.
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