Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC P1574 (68): Battery Module Temperature Signal Circuit Malfunction: General Description
When the battery module temperature is a specified value or more in the power save mode, the battery module temperature decreases if the battery module cooling system is normal. The battery module temperature sensor stuck failure is detected by comparing the battery module temperature decrease over a specified time to a specified value. Similarly, when the battery module temperature is a specified value or less in the power save mode, the battery module temperature increases if the battery module heating system is normal. The battery module temperature sensor stuck failure is detected by comparing the battery module temperature increase over a specified time to a specified value. If the change in battery module temperature is a specified value for a set time, a malfunction is detected and a DTC is stored.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.