Powertrain
generic / SAE
P2100
Throttle Actuator Control Motor Circuit Open
The drive-by-wire throttle motor circuit is open — no current flow detected. The ECU loses authority over the throttle plate and forces a limp-home with reduced power.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number1 / 00
Possible causes
- Throttle motor failed high
- Connector loose or corroded medium
- Wiring break to throttle body medium
Symptoms
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–700 €
- Estimated time: 0.5–2.5 h
- Component: throttle actuator motor
- Component: throttle body wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012