A speed sensor can cause shifting problems. The location of the sensor is on the bell housing near where it mounts to the engine. It is easy to damage a wire, pinch a wire or even partially disconnect the connector.
Do me a favor. Check to see if any of the aforementioned conditions exist. Here are the directions for replacing the sensor. At least these directions will get you to the right part so you can check. The attached pics correlate with the directions.
I have to be honest, I'm not sure how it could have caused the vehicle to go to reverse. However, since the code exists, something has happened, so lets start there.
2000 Toyota Celica GT L4-1.8L (1ZZ-FE)
Removal and Installation
Vehicle Powertrain Management Sensors and Switches - Powertrain Management Sensors and Switches - Computers and Control Systems Vehicle Speed Sensor Service and Repair Procedures Removal and Installation
REMOVAL AND INSTALLATION
1. REMOVE BATTERY
2. REMOVE ECM AND ECM CASE
3. REMOVE ECM BRACKET
4. DISCONNECT VEHICLE SPEED SENSOR CONNECTOR
5. REMOVE VEHICLE SPEED SENSOR ASSEMBLY
a) Remove the bolt and vehicle speed sensor assembly.
B) Remove the clip and speedometer driven gear from the vehicle speed sensor.
C) Remove the O-ring from the vehicle speed sensor.
6. INSTALL VEHICLE SPEED SENSOR ASSEMBLY
a) Coat a new O-ring with ATF and install it to the vehicle speed sensor.
B) Install the speedometer driven gear to the vehicle speed sensor with clip.
C) Install the vehicle speed sensor assembly with the bolt.
Torque: 5.5 Nm (56 kgf-cm, 49 inch lbs.)
7. CONNECT VEHICLE SPEED SENSOR CONNECTOR
8. INSTALL ECM BRACKET
Bolt: 18 Nm (185 kgf-cm, 13 ft. Lbs.)
Nut: 12 Nm (120 kgf-cm, 9 ft. Lbs.)
9. INSTALL ECM AND ECM CASE
Torque: 6.9 Nm (70 kgf-cm, 61 inch lbs.)
10. INSTALL BATTERY
Let me know what you find.
Images (Click to enlarge)
Sunday, September 22nd, 2019 AT 4:51 PM