BMW DTC P1D29 – A/C Compressor Motor Voltage Sensor ‘B’ Voltage Out of Range Low
DTC P1D29 meaning on BMW
DTC P1D29 on a BMW indicates that the A/C compressor motor voltage sensor ‘B’ is detecting a voltage that is out of range low. This sensor is responsible for monitoring the voltage levels in the A/C compressor motor to ensure proper operation.
BMW DTC P1D29 symptoms
Symptoms of DTC P1D29 on a BMW may include the A/C system not cooling effectively, unusual noises coming from the A/C compressor, or the A/C system not working at all.
BMW DTC P1D29 causes
The causes of DTC P1D29 on a BMW can vary, but common reasons include a faulty A/C compressor motor voltage sensor ‘B’, wiring issues, or a problem with the A/C compressor motor itself.
BMW DTC P1D29 seriousness
While DTC P1D29 may not directly affect the drivability of the vehicle, it can impact the comfort level inside the car, especially during hot weather. Ignoring this issue may lead to further damage to the A/C system.
How to diagnose DTC P1D29 on BMW
To diagnose DTC P1D29 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a visual inspection of the A/C compressor motor voltage sensor ‘B’ and its wiring. They may also test the sensor’s voltage output to determine if it is within the specified range.
How to fix DTC P1D29 on BMW
Fixing DTC P1D29 on a BMW may involve replacing the A/C compressor motor voltage sensor ‘B’ if it is found to be faulty. Additionally, checking and repairing any damaged wiring or addressing issues with the A/C compressor motor itself may be necessary to resolve the problem.
How to erase DTC P1D29 on BMW
Once the underlying issue causing DTC P1D29 on a BMW has been fixed, the fault code can be cleared using a diagnostic scanner. This will reset the system and turn off the check engine light associated with the fault code.
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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