Code result
P2159
Vehicle Speed Sensor B Range/Performance
Moderate severity
What it means
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.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Faulty vehicle speed sensor B
highOne of the most commonly reported causes for this code — check this first.
Damaged wiring or connector
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
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