C0070
Vehicle Speed Sensor Circuit
The chassis controller detects a fault in the dedicated vehicle speed sensor circuit (when present in addition to wheel speed sensors).
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: medium
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.
- Sensor failedCommon
- Wiring openPossible
Parts involved
- Vehicle Speed Sensor
- Sensor Wiring
C0070 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.