What does code P1645 mean?

Q: What does code P1645 mean?

Body ECU Malfunction. P1645 on Toyota vehicles indicates that the Body ECU (Electronic Control Unit) has reported an internal malfunction or a failure in its communication with other modules. The code is stored when the Body ECU detects a fault in its own circuitry or when the main ECU receives invalid data from the Body ECU over the vehicle's multiplex communication network.

DTC codes / Toyota codes / P1645

P1645 · ToyotaBody ECU Malfunction

P1645 on Toyota vehicles indicates that the Body ECU (Electronic Control Unit) has reported an internal malfunction or a failure in its communication with other modules. The code is stored when the Body ECU detects a fault in its own circuitry or when the main ECU receives invalid data from the Body ECU over the vehicle's multiplex communication network.

SystemPowertrain

Code typeToyota specific

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

Guidance is general and written for Toyota vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.