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DTC P3000-4B: Hybrid/EV Battery Control System Over Temperature [09/2023 - ]: Description

WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.

The hybrid vehicle control ECU assembly monitors its internal operation and detects the following malfunction.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate DTC Output from Priority Note
P3000-4B Hybrid/EV Battery Control System Over Temperature The HV battery temperature becomes too high due to a malfunction in the HV system.
(1 trip detection logic)
  • Battery voltage sensor
  • Hybrid vehicle control ECU assembly
  • HV battery
Does not come on Master Warning:
Comes on
Hybrid Control A SAE Code: P3000