C0070 code meaning
Vehicle Speed Sensor Circuit
What C0070 means
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.
C0070 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0070
- Speedometer inaccurate or dead
- Stability and speed functions disabled
- Erratic transmission shifting
Common causes of C0070
- Most likelyOpen or shorted speed signal wiring
- PossibleFailed wheel or output speed sensor
- Less likelyCorroded or loose connector
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Vehicle speed sensorSensor wiring
What each part of C0070 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 70 | The exact fault in that area. |
What to do next
- Note C0070 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about C0070
What does C0070 mean?
C0070 means "Vehicle Speed Sensor Circuit". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with C0070?
Drive gently and only to a workshop. With C0070 the car can go into limp mode (reduced power) to protect itself.
Will C0070 fail an emissions test?
C0070 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is C0070 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will C0070 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.