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P1D38 – BMW DTC

BMW DTC P1D38 – A/C Refrigerant Pressure Sensor ‘A’ Pressure Out of Range High

DTC P1D38 meaning on BMW

DTC P1D38 on a BMW indicates that the A/C refrigerant pressure sensor ‘A’ is detecting a pressure reading that is higher than the specified range.

BMW DTC P1D38 symptoms

Symptoms of DTC P1D38 on a BMW may include:

  • Malfunctioning air conditioning system
  • Reduced cooling performance
  • Check Engine Light illuminated

BMW DTC P1D38 causes

Possible causes of DTC P1D38 on a BMW include:

  • Low refrigerant level
  • Faulty A/C refrigerant pressure sensor
  • Issues with the A/C system components

BMW DTC P1D38 seriousness

DTC P1D38 should be addressed promptly as it can lead to poor A/C performance and discomfort while driving, especially in hot weather conditions.

How to diagnose DTC P1D38 on BMW

To diagnose DTC P1D38 on a BMW, you can perform the following steps:

  1. Use a diagnostic scanner to retrieve the fault codes
  2. Check the refrigerant level in the A/C system
  3. Inspect the A/C refrigerant pressure sensor for any visible damage
  4. Test the sensor’s functionality using a multimeter

How to fix DTC P1D38 on BMW

To fix DTC P1D38 on a BMW, you may need to:

  1. Recharge the A/C system with the correct refrigerant level
  2. Replace the faulty A/C refrigerant pressure sensor
  3. Inspect and repair any leaks in the A/C system
  4. Clear the fault codes and reset the system

How to erase DTC P1D38 on BMW

To erase DTC P1D38 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s system 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

← All BMW Diagnostic Trouble Codes

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