C0070Vehicle Speed Sensor Circuit
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- Covers the vehicle speed sensor circuit, the source of the overall road-speed signal used by the ABS/ESC module and shared with the speedometer, transmission and other systems. On many vehicles road speed is derived from the wheel speed sensors or a transmission output sensor; this code is set when that speed signal is open, shorted, out of range or implausible against the individual wheel speeds. A fault can disable stability and speed-dependent functions, disturb the speedometer and affect shift scheduling, and sets the ABS/ESC warning lamp while base braking remains. Active wheel speed sensors, which typically feed this signal, read a magnetic encoder through a Hall element and need an intact circuit. No code-specific public bulletin was confirmed; the entry follows the SAE J2012 generic definition.
- What you may notice
- Speedometer inaccurate or dead
- Stability and speed functions disabled
- Erratic transmission shifting
- Likely causes
- LikelyOpen or shorted speed signal wiring
- PossibleFailed wheel or output speed sensor
- RareCorroded or loose connector
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.