DTC P1644-00: ECU Internal Error [11/2016 - ]: Description
WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
If a malfunction is detected in the starter circuit, the engine stop and start ECU stores DTC P164400 and blinks the stop and start cancel indicator.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Memory | Note |
|---|---|---|---|---|---|---|
| P164400 | ECU Internal Error | Both of the following conditions are met for 0.2 seconds or more (1 trip detection logic):
|
|
Blinks | DTC stored | SAE Code: P1644 |