Monitor Description
WARNING: This page is about a different car, the 2022 Toyota Avalon, 2021 Toyota Avalon, 2020 Toyota Avalon, and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
These DTCs indicate a problem with the park/neutral position switch assembly or the wire harness in the park/neutral position switch assembly circuit.
The park/neutral position switch assembly detects the shift lever position and sends signals to the ECM.
For safety, the park/neutral position switch assembly detects the shift lever position so that the engine can be started only when the shift lever is in P or N.
The park/neutral position switch assembly sends a signal to the ECM according to the shift lever position (P, N, R, D or S).
The ECM determines that there is a problem with the switch or related parts if it receives more than 1 position signal simultaneously and will then illuminate the MIL and store a DTC.