BMW DTC P1D97 – Heat Pump Expansion Valve ‘C’ Control Circuit Low
DTC P1D97 meaning on BMW
DTC P1D97 on a BMW refers to the Heat Pump Expansion Valve ‘C’ Control Circuit Low. This diagnostic trouble code indicates that there is a low voltage condition detected in the control circuit of the heat pump expansion valve ‘C’.
BMW DTC P1D97 symptoms
Symptoms of BMW DTC P1D97 may include reduced heating or cooling performance from the HVAC system, irregular temperature output, or the HVAC system not functioning as expected.
BMW DTC P1D97 causes
The causes of BMW DTC P1D97 can vary and may include issues such as a faulty expansion valve, wiring or connector problems in the control circuit, or a malfunctioning control module.
BMW DTC P1D97 seriousness
While BMW DTC P1D97 may not cause immediate drivability issues, it can affect the comfort and functionality of the HVAC system. It is recommended to address this issue to ensure proper heating and cooling operation.
How to diagnose DTC P1D97 on BMW
To diagnose BMW DTC P1D97, a diagnostic scan tool capable of reading BMW specific codes is needed. The technician will inspect the heat pump expansion valve ‘C’ control circuit for any visible damage, test the wiring and connectors for continuity, and check the control module for proper operation.
How to fix DTC P1D97 on BMW
Fixing BMW DTC P1D97 may involve replacing the heat pump expansion valve if it is found to be faulty, repairing any damaged wiring or connectors in the control circuit, or replacing the control module if necessary. It is recommended to follow manufacturer guidelines and use OEM parts for the repair.
How to erase DTC P1D97 on BMW
After the necessary repairs have been made to address BMW DTC P1D97, the diagnostic trouble code can be cleared using a diagnostic scan tool. The technician can access the DTC menu, select the option to clear the code, and confirm the action to erase the DTC from the vehicle’s memory.
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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