The control module detected a fault associated with the High Voltage Battery Temperature Sensor Circuit Level 1 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Hyundai.
TuningBot DTC Database · v4.37.15
P1B78 High Voltage Battery Temperature Sensor Circuit Level 1
1 manufacturer-specific interpretation across 1 manufacturer in the TuningBot DTC database.
Hyundai
1 interpretationRelated and nearby codes
How to read P1B78
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Frequently asked questions about P1B78
What does P1B78 mean?
High Voltage Battery Temperature Sensor Circuit Level 1. The control module detected a fault associated with the High Voltage Battery Temperature Sensor Circuit Level 1 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Hyundai.
Is P1B78 generic or manufacturer-specific?
P1B78 is a manufacturer-specific code. In this database it is documented for: Hyundai. The same number can mean something different on other brands.
Can TuningBot remove P1B78 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
