Trouble Code 24 (Speed Sensor n-ab, Downshift Protection)
SPEED SENSOR n-ab, DOWNSHIFT PROTECTIONExplanation
This defect code is stored when the output speed fails at high engine speeds and the downshift protection facility is active.
Effect of detect
Mechanical emergency program
Possible cause
Wire from control unit Pin 8 to speed sensor or engine speed sensor defective.
Troubleshooting
Follow displayed scan tool instructions.