Code p1622 - Temp Gauage always in the middle

[donutholer]

Like the title says, I scanned the car and am getting code p1622. Seen online that replacing the thermostat is a good fix for this. however I heard something else can also break the thermostat? I don’t want to replace it and have it break again.

any advice with this code before I buy parts?

 

[Rudyrov]

Google AI info

AI Overview


BMW code P1622 typically indicates a MAP (Manifold Absolute Pressure) cooling thermostat control circuit electrical fault. This code suggests a problem with the thermostat housing sensor or its associated wiring, potentially affecting engine cooling.

Here's a more detailed breakdown:
Possible Causes:

• Faulty Thermostat Housing Sensor:
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  The sensor itself may be malfunctioning, sending incorrect readings to the engine control unit (ECU).
  
  
• Wiring Issues:
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  Damaged or corroded wiring between the sensor and the ECU can disrupt communication and trigger the code.
  
  
• Thermostat Malfunction:
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  The thermostat itself might be stuck open or closed, preventing proper engine temperature regulation.
  
  
• Low Battery Voltage:
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  In some cases, low battery voltage can also trigger this code.