P3000 - FAULT CODE P3000 - OBD2

POST UPDATED IN January, 2021

P3000 Code failures by brands

P3000 TOYOTA, LEXUS - BATTERY CONTROL SYSTEM MALFUNCTION

Description of DTC code P3000

The Battery Management System (BMS) provides the electronic control that manages a rechargeable battery. It ensures that the battery operation is within the safe area, it also calculates the secondary data, monitors its condition, and reports this data to control its environment or balance. When the battery is integrated into the BMS with an external communication data bus, it is considered a smart battery, which must be charged with a special smart battery charger.

In the case of Toyota and Lexus vehicles, the diagnostic code P3000 OBDII applies to failures with the battery control system. This code shows there is a problem with the battery ECU. This is set when the state of charge decreases, after leaving the vehicle in position N, or by a malfunction in the HV system. This is a very common code, which will usually be accompanied by a suffix to help with a more specific diagnosis.

Symptoms of fault code P3000

Causes of OBD2 P3000

The reasons why the fault code P3000 OBD2 is stored are:

  • The high voltage control system may have damage to its wiring.
  • The amount of fuel available may not be enough.
  • The high-voltage battery assembly may be damaged.

Possible solutions of the DTC code P3000

To solve the P3000 OBDII DTC code, you should consider the following:

  • See the Technical Service Bulletins.
  • Before proceeding with the diagnosis, it is necessary to consult the suffix that accompanies the code P3000.
  • Check that the engine has the necessary amount of fuel for good performance. Correct as required.
  • Check the wiring condition of the high-voltage battery system. If you detect deficiencies such as wear, burns, or corrosion, make the necessary repairs.

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