Diagnostic trouble code (DTC) information

Condition 

Fig 1: Additional Heater And Parking Heater

Courtesy of VOLVO CARS OF NORTH AMERICA.

This diagnostic trouble code is stored for certain internal control module faults.

Substitute Value 

Heater not activated.

Possible Source 

• Defective control module.

Fault symptom[s] 

• Poor heating in passenger compartment.