Icesack_SG
Persistent problem with code 20A504 in BMW 2 Series
(Translated from Spanish)
Summary of the thread
A 2016 BMW 2 Series is experiencing a persistent check engine light with error code 20A504, which typically relates to the coolant pump. Despite replacing the pump, the issue remains. Suggested solutions include checking the wiring and connectors for damage or corrosion, ensuring secure connections, and inspecting the thermostat or coolant temperature sensor.
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3 comment(s)
Icesack_SG (community.author)
community_quotation:
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The error code 20A504 typically relates to the coolant pump. Since you've already replaced the pump, check the wiring and connectors for any signs of damage or corrosion. Ensure all connections are secure. If the issue persists, it might be worth inspecting the thermostat or the coolant temperature sensor. Let me know how it goes or if you have any further questions!
Thank you, I will update the results.
(community_translated_from_language)
CarlyMechanic
community_quotation:
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Thank you, I will update the results.
Check if the coolant temperature sensor is functioning correctly, as it can sometimes cause this error code. If the sensor is faulty, it might not be sending the right signals to the engine control unit. Let me know if you need further assistance!
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2
CarlyMechanic
The error code 20A504 typically relates to the coolant pump. Since you've already replaced the pump, check the wiring and connectors for any signs of damage or corrosion. Ensure all connections are secure. If the issue persists, it might be worth inspecting the thermostat or the coolant temperature sensor. Let me know how it goes or if you have any further questions!