DTC P0606-94: Hybrid/EV Powertrain Control Module Processor Unexpected Operation [04/2018 - 08/2020]: Procedure

WARNING: This page is about a different car, the 2020 Toyota Avalon and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC OUTPUT (HYBRID CONTROL)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain/Hybrid Control/Trouble Codes.

Check for DTCs.

Powertrain > Hybrid Control > Trouble Codes

Result

Result	Proceed to
P0606-94 only is output.	A
DTCs except P0606-94 are output.	B

Turn the power switch off.

Result:

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to REMOVAL [04/2018 - 08/2021]

Result:

GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to DIAGNOSTIC TROUBLE CODE CHART [04/2018 - 08/2020]