DTC P073E[9E] Backup Light Switch Stuck ON (ABS/ESC)

1. DTC P073E[9E] description

The EHCU receives a backup light switch signal from the instrument panel cluster via the CAN communication circuit. When the EHCU detects that the backup light switch is stuck ON, this DTC is set.

2. Condition for setting DTC P073E[9E]

Condition for running the DTC

  • The transmission type is manual transmission.
  • The vehicle is running at a speed of 40 km/h {25 mph} or more.

Condition for setting the DTC

  • The vehicle speed is 10 km/h {6 mph} or less after the EHCU detects a backup light switch ON status for 20 seconds.

3. Action taken when DTC P073E[9E] sets

  • HSA control inhibition (Models with ESC)
  • Hill Descent Control inhibition (Models with ESC)