Got check engine light , vsc trac, and vsc off sensors. pepboys gave me scanned codes: po500 vehicle speed sensor and code po705 transmission range sensor/switch circuit malfunction. problems are: speedometer/odometer, in-reverse camera do not work and have trans. slipping in reverse. your feedback please.

Maybe.
Code 500 is for a problem with the speed sensor or the circuit. But it could also be something mechanical inside the transmission. The signal the engine computer is getting from the sensor is out of normal range for the condition.

you need to have code erased using code scanner.any time replace sensor you have to erase code or check engine light stay on.

A p0420 sets after Engine and catalyst are warmed up, vehicle driven within set vehicle engine speed range and waveforms of heated O2 sensors bank 1 sensor 1 and bank 1 sensor 2 have the same amplitude.
Catalytic convertor and O2 sensors need to be tested

Very common problem. There is a problem with your traction control system. The most likely cause would be a malfunctioning vehicle speed sensor or a wheel speed sensor. You will have to scan your computer control systems to find out exactly what is causing it. There will be fault codes stored in the engine control module (ECM).

Toyotas and Lexus cars have some unique feaures. If your fuel cap is loose or the O2 sensors on the exhaust are faulty this results in an emission problem and the engine computer unit (ECU) engages the check engine light and disables the VSC (the VSC light comes on to warn you that it has been disabled). However you have p0500 code which says the car has no speed sensor signal. The seed sensor is located on the side of the final drive from the transmission and its job is to measure the speed of rotation of the output shaft. The ECU will compare the signals from this shaft along with the speed sensors in the wheel hubs. If there is a difference between these signals the VSC is engaged to apply braking effort to which ever wheel is slipping (running faster) than the other or that the transmission speed sensor would warrant.
So you either have an emission fault has fed back to the VSC and speed sensor missing (p0500) condition, or you have a faulty sped sensor which has tripped the VSC light and in turn the CEL.
Check your fuel filler cap is on tight, turn radio off and disconnect the negative lead to the battery for 5 minutes (this should clear the ECU memory of the code error). If p0500 error and CEL and VSC lights come back on then check the electrical connection to the speed sensor. Ensure it is clean and making a good contact, check the wiring for continuity. If everything else looks good consider changing the speed sensor.

Yup, if you scanned your engine computer and you got a code P0705, you can bet that's why your Check Engine light is on.

P0705, however, is NOT a Vehicle Speed Sensor code on this vehicle. It is a Digital Transmission Range Sensor code. It is caused by an open or shorted circuit in the TR-1, TR-2, TR-3a or TR-4 circuits. This code CANNOT be set by an incorrectly adjusted TR Sensor.

you to have your system scanned by someone. when the check engine light comes on it puts your car in safe mode it disables vechile speed control and traction as i precaution. if its running ok car is safe to drive. but u need to scan system get the code and repair whatever set the code.. most common is a air fuel or oxygen sensor problem...

It is not hard to change the sensor, it just screws into a threaded hole. The light will not go out immeditaly, after the sensor is replaced. It needs to go thru a drive cycle. Your best bet is to replace the sensor and get the code cleard by whoever scanned it for the 0031 code.

The check engine light ,trac control light and VSC light are on. Does this normally represent a serious problem on a 2004 toyota solara?

Toyota Specific Trouble Codes
P1135 Air/Fuel Sensor Heater Circuit Response. (Bank 1 Sensor 1)
If you have changed the proper sensor then you may need to have the cam shaft looked at.