You are here:

Toyota Repair/speed senor on 94 toy corolla


QUESTION: hi i saw U answered a question about a 94 Toyota about speedometer stopped working car has trouble shifting when i first take off  OD light flash got code 42 said#1 speed sensor i replaced the sensor that goes to the transmission then U said there is another one at the speedometer O told the guy to switch out the speed that should fix the problem did it work or what should i try next don't want to keep purchasing parts that are not needed

ANSWER: Was the speedometer replaced, the other sensor is in the speedometer.

---------- FOLLOW-UP ----------

QUESTION: no i havent replaced anything but the speed senser in the trans but when it didnt fix the prob i unpluged it and there was no diffence hooked up or not is that normal and will the senor in the speedo make the car react like i discribed thaks pat

The speed sensor in the transmission send information to the #2 speed sensor in the speedometer and then it goes to the computer, it's possible that the speedometer still works but the signal out to the computer is missing. If the speedometer works then the speed sensor in the transmission is not the problem

Toyota Repair

All Answers

Answers by Expert:

Ask Experts


Ted Ritter


I have more than 28 years experience as toyota technician, I will be able to answer most questions related to the Toyota product line up to the present year models,I am located in the US but welcome questions from other regions of the world. When asking a question please provide specific information: year,model, engine,transmission information. Provide as much information as possible including a brief repair history if possible. I have been a volunteer here for more ten years an have answered over 16,000 questions helping Toyota owners with their problems and save thousands of dollars without any compensation, some of my answers are published on many other websites including google and various automotive forums. DONATIONS ARE VERY MUCH APPRECIATED, IF YOU HAVE RECIEVED HELPFUL INFORMATION PLEASE MAKE A DONATION. AS OF TODAY (JULY 22, 2014) ALL REQUESTED GRAPHICS, ILLUSTRATIONS, DIAGRAMS, PHOTOS, WILL REQUIRE THE MINUMUM DONATION UP FRONT.


Toyota technician since 1979,expert in electrical systems,OBD systems,engine repair, driveability problems,EFI systems,ASE certified,Toyota master technician.
Certified Hybrid Vehicle technician.

Toyota master technician, ASE certified in eight catagories, Hybrid vehicle certified. Toyota technical training: Engine Automatic transmission Manual transmission Drivetrain Electrical systems Brakes and chassis Air conditioning Engine performance and diagnostics Hybrid systems

©2017 All rights reserved.