P2159 OBD-II: Vehicle Speed Sensor "B" Range/Performance
P2159 Severity
Will P2159 go away on its own?
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
What causes OBD-II fault code P2159?
The Vehicle Speed Sensor tells the engine control module (PCM) how fast the vehicle is going. This information is sent to the speedometer where the road speed is displayed in miles per hour or kilometers per hour. In addition, this information is usually shared with other vehicle systems such as the Transmission, ABS, Traction Control and Power Steering. When the PCM detects an inaccurate or irrational reading, it will set code P2159.
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OBD II Fault Code
- OBD II P2159
OBD-II Code Transmission may not shift properly is defined as a Vehicle Speed Sensor "B" Range/Performance
The Vehicle Speed Sensor tells the engine control module (PCM) how fast the vehicle is going. This information is sent to the speedometer where the road speed is displayed in miles per hour or kilometers per hour. In addition, this information is usually shared with other vehicle systems such as the Transmission, ABS, Traction Control and Power Steering. When the PCM detects an inaccurate or irrational reading, it will set code P2159.
Transmission may not shift properly Symptoms
- Inaccurate vehicle speed displayed
- Transmission may not shift properly
Common Problems That Trigger the P2159 Code
- Powertrain Control Module (PCM) failure
- Vehicle speed sensor failure
- Wiring issue
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