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My 4runner is getting "P0500 - Vehicle Speed Sensor A". What does the "A" mean? Which wheel is that?

  • Is the ABS light on? Does the speedometer work? – Ben Jan 20 '18 at 1:02
  • @Ben Yes and No. You actually helped me with this problem here. I've been getting mixed answers from various people. – aidan.plenert.macdonald Jan 20 '18 at 1:39
  • OK, so if the ABS light is on that means one or more of the wheel speed sensors or the VSC ECU it self is bad. This is most commonly a Wheel speed sensor harness issue. Flash out the codes per that other question. You can try ohming the sensor I think the correct reading is around 1.5kΩ, you can find the component test in your service manual. But you should really scope the sensor output. – Ben Jan 20 '18 at 1:44
  • @Ben Thanks! Is there a way to know which wheel? I was thinking that "A" may correlate to a some wheel. – aidan.plenert.macdonald Jan 20 '18 at 1:46
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    No, any of the sensors failing can cause the speedo to stop working and for p0500 to set. Flash the codes, it'll tell you where to look next. – Ben Jan 20 '18 at 1:47
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This has to do with the main vehicle speed sensor (VSS), not the wheel speed sensors. It's a generic code from the P050x series. The other P050x codes are specific issues.

Symptoms of a P0500 DTC may include:

  • 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

Things which might be at issue are:

  • 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

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