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Speedo not working +no overdrive but for months check transmission light has been flashing!! Just put a new speed sensor on but that didn't fix the problems...any ideas?
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sounds like a transmission issue could need a transmission fluid flush then you should be fine the first indicator that your transmission is going bad is the first gear and reverse but since its overdrive probably just a tranny fluid issue hope that helps
Did you change the Vehicle speed sensor or the wheel speed sensor?? The vehicle speed sensor is located on the side of the transmission..And its for the speedometer and shift pattern..If all good depending on what year,some have to be reprogrammed
code p 0500 is for the vehicle speed sensor (VSS) which works the speedo as well as the ratio changes
code p0720 refers to the output shaft sensor --ECM or transmission control module (TCM)
the vss reports to the tcm which reads the road speed and gear ratio and shifts the appropriate solenoid
I have the same problem with my 95 Toyota T100. My O/D off light started flashing when my speedometer cable broke this week-end. I assume the electronic transmission is using the speed data to manage the overdrive.
Have your speedometer problem fixed and your flashing light will turn off.
Check you speed sensor on the transmission, Overdrive wont work without speed sensor, nor will ABS, or Speedometer.. it all boils down to a speed sensor.
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