BMW DTC P1C44 – Hybrid/EV Battery Pack Coolant Outlet Temperature Sensor Circuit Low
DTC P1C44 meaning on BMW
DTC P1C44 on a BMW indicates an issue with the Hybrid/EV Battery Pack Coolant Outlet Temperature Sensor Circuit registering a low voltage signal. This sensor is responsible for monitoring the temperature of the coolant as it exits the battery pack in hybrid or electric vehicles.
BMW DTC P1C44 symptoms
Symptoms of DTC P1C44 on a BMW may include inaccurate temperature readings on the dashboard, the vehicle going into a reduced power mode, or the check engine light illuminating on the instrument cluster.
BMW DTC P1C44 causes
The causes of DTC P1C44 on a BMW can vary and may include a faulty temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the battery pack coolant system.
BMW DTC P1C44 seriousness
While DTC P1C44 may not directly affect the drivability of the vehicle, it is essential to address this issue promptly to prevent potential damage to the hybrid or electric vehicle’s battery pack due to incorrect temperature readings.
How to diagnose DTC P1C44 on BMW
To diagnose DTC P1C44 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a visual inspection of the temperature sensor, wiring, and connectors. They may also test the sensor’s resistance and voltage output to determine if it is functioning correctly.
How to fix DTC P1C44 on BMW
Fixing DTC P1C44 on a BMW may involve replacing the Hybrid/EV Battery Pack Coolant Outlet Temperature Sensor if it is found to be faulty. Additionally, repairing any damaged wiring or connectors in the sensor circuit and ensuring proper connection to the battery pack coolant system is crucial.
How to erase DTC P1C44 on BMW
Once the underlying issue causing DTC P1C44 on a BMW has been resolved, the fault code can be cleared using a diagnostic scanner. This will reset the check engine light and allow the vehicle’s onboard computer to monitor the system for any new faults.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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