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P2159 Powertrain

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.

Affected components

  • Vehicle speed sensor
  • Wheel speed sensor
  • Vss wiring

Common causes

  • High likelihood: Faulty vehicle speed sensor B
  • Medium likelihood: Damaged wiring or connector
  • Low likelihood: Sensor element aged beyond calibration window

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • This code can affect emissions
  • A drive cycle may be required after repair

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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