C0730
Electric Power Steering Motor Position Sensor Circuit
The EPS motor position sensor (resolver/Hall) reports an implausible or missing signal.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: hard
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Common causes
Ordered by how often each turns out to be the cause.
- Position sensor failedCommon
- Connector corrodedPossible
Parts involved
- Eps Motor Position Sensor
- Eps Control Module
C0730 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.