CAR OBD CODES

P0501 OBD Code Definition:
P0501 Vehicle Speed Sensor A Range/Performance
P0501 OBD Code Description:

OBD2 Code P0501 Definition:
Basically this means that the vehicle’s speed as read by the Vehicle Speed Sensor (VSS) is not working properly. Symptoms

Possible sumptoms of P0501
This code is different from the P0500 code in the fact that it may not trigger the malfunction indicator light (MIL). Potential symptoms are basically the same as the P0500 VSS code: P0500 loss of anti-lock brakes the “anti-lock” or “brake” warning lamps on the dash may be lit the speedometer or odometer may not work properly (or at all) your vehicle’s RPM limiter may be decreased the shifting of an automatic transmission may become erratic other symptoms may also be present Possible Causes

Possible causes of P0501
A P0501 DTC trouble code may be caused by one or more of the following: The Vehicle Speed Sensor (VSS) is not reading (functioning) properly There is a broken/frayed wire leading to the vehicle speed sensor The vehicle’s PCM is not correctly configured for the actual tire size on the vehicle Possible Solutions

The simplest thing to do is to reset the code and see if it comes back. Next, check all wiring and connectors that lead to the speed sensor. The location of the sensor depends on your vehicle. The sensor could be on the rear axle, transmission, or perhaps the wheel hub (brake) assembly. If the wiring and connectors are OK, then check the voltage at the speed sensor. Again, the exact procedure wil depend on your make and model of vehicle. If everything looks OK, replace the sensor. OBD-II Codes

P0501 P0502 P0503 P0504 P0505 P0506 P0507 P0508 P0509
Note: The information on the P0501 error code is purely informative, if you need more useful information, please consult your technician.