The control module detected an unstable or intermittent signal in the Hybrid/EV Battery Pack Coolant Temperature Sensor D circuit.
TuningBot DTC Database · v4.37.15
P2E78 Hybrid/EV Battery Pack Coolant Temperature Sensor D Circuit Intermittent/Erratic
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P2E78 means
Related and nearby codes
How to read P2E78
Powertrain: engine, transmission and driveline systems.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about P2E78
What does P2E78 mean?
Hybrid/EV Battery Pack Coolant Temperature Sensor D Circuit Intermittent/Erratic. The control module detected an unstable or intermittent signal in the Hybrid/EV Battery Pack Coolant Temperature Sensor D circuit.
Is P2E78 generic or manufacturer-specific?
P2E78 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P2E78 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
