DTC P0503: Vehicle Speed Sensor Circuit Malfunction [08/2015 - 08/2019]: Description
WARNING: This page is about a different car, the 2019 Toyota 4Runner, 2018 Toyota 4Runner, 2017 Toyota 4Runner, and 2016 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
If a malfunction (a rapid change in vehicle speed) in the vehicle speed signal being output from the skid control ECU is detected while cruise control is in operation, the ECM determines there to be a momentary interruption or noise and stores a DTC.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0503 | A malfunction in the vehicle speed signal is detected while cruise control is in operation. |
|