DTC P3000-603: Battery Control System [08/2013 - ]: Procedure

WARNING: This page is about a different car, the 2014 Lexus ES 300h. 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.

Result

Result	Proceed to
P3000-603 only is output.	A
DTCs except P3000-603 are also output.	B

Turn the power switch off.

B → See step 3

A: Go to next step

REPLACE POWER MANAGEMENT CONTROL ECU
Refer to COMPONENTS [08/2013 - ]

NEXT → See step 4
GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2013 - ]
REPLACE HV BATTERY. Refer to COMPONENTS [08/2013 - ]