Audi Tech Tip: Passenger Compartment Not Warming Up?

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Technical resources to help diagnose and repair engine-related service issues.
Heating / Cooling

Audi Tech Tip: Passenger Compartment Not Warming Up?

Code B10D004 will indicate a coolant circulation pump failure.

Underhood Service Staff Writers
By Underhood Service Staff Writers
Published:

Models: 

A6/A7: 2012-2015 

Related Articles

A8/S8/S8+: 2014-2017

Bulletin: 191790

The customer may complain of a lack of heat in the passenger compartment even if the vehicle has been running for a long period. In the Climatronic control module, one or two DTC codes will be present. Code B10D004 will indicate a coolant circulation pump failure.

Code B11D501 indicates the supply voltage for terminal 30 of the coolant circulation pump has an electrical fault. 

To remedy the problem, the V50 coolant circulation pump needs to be replaced. 

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