P2504 – BMW DTC

BMW DTC P2504 – Charging System Voltage High

DTC P2504 meaning on BMW

The Diagnostic Trouble Code (DTC) P2504 for BMW indicates a fault in the charging system related to high voltage. This code is triggered when the Engine Control Module (ECM) detects that the voltage in the vehicle’s charging system is above the specified threshold.

BMW DTC P2504 symptoms

Symptoms of DTC P2504 on a BMW may include:

  • Dashboard warning light related to the charging system
  • Dimming or flickering lights
  • Battery overcharging
  • Electrical system malfunctions

BMW DTC P2504 causes

Common causes of DTC P2504 on a BMW include:

  • Defective voltage regulator
  • Faulty alternator
  • Wiring issues in the charging system
  • Corroded battery terminals

BMW DTC P2504 seriousness

Ignoring DTC P2504 on a BMW can lead to potential damage to the vehicle’s electrical components and the battery. It is important to address this issue promptly to prevent further complications and ensure the proper functioning of the charging system.

How to diagnose DTC P2504 on BMW

To diagnose DTC P2504 on a BMW, a mechanic would typically perform the following steps:

  1. Use a diagnostic scanner to retrieve the fault code
  2. Inspect the alternator and voltage regulator for any visible signs of damage
  3. Check the battery voltage and charging system output
  4. Inspect the wiring and connections in the charging system

How to fix DTC P2504 on BMW

To fix DTC P2504 on a BMW, the following steps may be taken:

  1. Replace the faulty voltage regulator or alternator
  2. Repair any damaged wiring or connections in the charging system
  3. Clean or replace corroded battery terminals
  4. Perform a charging system test to ensure proper operation

How to erase DTC P2504 on BMW

To erase DTC P2504 on a BMW, the fault code can be cleared using a diagnostic scanner. After addressing the underlying issue causing the fault code, the ECM can be reset to clear the code and turn off the warning light.