P2102 – Throttle Actuator ‘A’ Control Motor Circuit Low
Description
The ECM detects low voltage in the throttle actuator motor circuit, causing limited throttle operation.
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A diagnostic scanner with live data, freeze-frame information and the right system access can help you investigate the actual cause before replacing parts.
Compare Diagnostic ScannersSymptoms
- Weak throttle response
- Limp mode
- Rough idle
- Check Engine light
Causes
- Low system voltage
- Wiring resistance
- Faulty throttle actuator motor
- PCM/ECM driver fault
Diagnosis
- Check battery and charging system
- Inspect wiring resistance
- Test actuator motor
- Verify PCM/ECM output
Repair
- Repair wiring
- Replace throttle actuator
- Replace PCM/ECM if needed
