I have a p0500 code. how do i fix it - 1995 Nissan 200SX

Whomever ran diagnostics should have told, anyone can buy a $39.00 scanner it comes with codes. If they could not tell you , perhaps someone else. All sold in North American use OBD2 codes and they are available on line. Search you code code p0500 for answer.
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https://www.yourmechanic.com/article/p0500-obd-ii-trouble-code-vehicle-speed-sensor-malfunction-by-spencer-clayton

take to transmission shop


P0700 Transmission Control System Malfunction


https://www.obd-codes.com/p0500

This is a vehicle speed sensor to fix this you need to replace the sensor located in the top of the transmission (on the top of the gearbox)

A code P0500 may mean that one or more of the following has happened: 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

Perhaps this will help you find your problem:
http://www.toyotanation.com/forum/103-3rd-4th-generation-1992-1996-1997-2001/397692-what-should-i-check-next-p0500-code.html
I just love Google. I hope this helps you.

P1296 No 5-Volts to MAP Sensor
P0108 MAP Sensor Voltage Too High
P0500 No Vehicle Speed Signal Circuit
P1494 Leak Detection Pump Switch or Mechanical Faul
I would try MAP sensor first.

i would say u need more diag to pinpoint the problem if there are issues with the speedo i would say its the vss

What does that mean? Basically this means that the vehicle's speed as read by the Vehicle Speed Sensor (VSS) is not working properly.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook SymptomsSymptoms 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

Causes A code P0500 may mean that one or more of the following has happened:

• 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 speed sensor

Speed sensor malfunction (Speed Sensor A)
Remove and replace.