P2159
Vehicle Speed Sensor B Range/Performance
The signal of the secondary vehicle speed sensor is implausible compared to other sensors. The ECU cannot use the value for fuel and ignition control or transmission shifting.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Faulty vehicle speed sensor BCommon
- Damaged wiring or connectorPossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Vehicle Speed Sensor
- Wheel Speed Sensor
- VSS Wiring
P2159 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.