DTC Troubleshooting: P0501, P2159
DTC P0501: Vehicle Speed Sensor A Out of Range
DTC P2159: Vehicle Speed Sensor B Out of Range
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
P0501 Vehicle Speed Sensor A Out of Range
    
P2159 Vehicle Speed Sensor B Out of Range
    

1.
Problem verification:

Problem verification
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Clear the VSA system DTCs with the HDS.


?4.
Start the engine.

?5.
Test-drive the vehicle under these conditions:
Vehicle speed above 19 mph (30 km/h) for more than 30 seconds

Signal
Current conditions
Values
Unit
Vehicle Speed
    

?6.
Check the following VSA system DTCs with the HDS.
DTC Description
DTC
Freeze Frame
C0030-38 Magnetic Encoder (Left Front) Failure (Pulse Missing)
    
C0031-14 Left Front Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    
C0031-62 Left Front Wheel Speed Sensor Signal Compare Failure
    
C0033-38 Magnetic Encoder (Right Front) Failure (Pulse Missing)
    
C0034-14 Right Front Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    
C0034-62 Right Front Wheel Speed Sensor Signal Compare Failure
    

Is DTC C0030-38, C0031-14, C0031-62, C0033-38, C0034-14, and/or C0034-62 indicated?

     
YES
     
     
     
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the left-front wheel speed sensor, the right-front wheel speed sensor, the VSA modulator-control unit, the output shaft (countershaft) speed sensor, and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot.?