Climate control trouble codes Volvo 850

Diagnostic socket A-6.

Diagnostic trouble code (DTC) x Cause
1-1-1 No fault found by diagnostic system
1-2-1 Outside temperature sensor ground (GND) short
1-2-2 Outside temperature sensor open circuit or shorted to 12 V
1-2-3 Driver’s side passenger compartment temperature sensor GND short
1-2-4 Driver’s side passenger compartment temperature sensor open circuit or shorted to 12 V
1-2-5 Passenger side passenger compartment temperature sensor GND short
1-2-6 Passenger side passenger compartment temperature sensor open circuit or shorted to 12 V
1-3-1 Driver’s side duct temperature sensor short-circuit to ground
1-3-2 Driver’s side duct temperature sensor open-circuit or short-circuit to 12V supply voltage
1-3-3 Passenger side duct temperature sensor short-circuit to ground
1-3-4 Passenger side duct temp. sensor open circuit or short-circuit to 12V supply voltage
1-3-5 Engine temperature no frequency signal
1-4-1 Driver’s side temperature switch giving faulty control signal
1-4-3 Passenger side temperature switch giving faulty control signal
1-4-5 Air distribution switch faulty control signal
1-5-1 Control signal from fan speed switch missing or too high
1-5-2 Control signal from fan speed signal GND short
2-1-1 Driver’s side damper motor position sensor open circuit or shorted to 12 V
2-1-2 Driver’s side damper motor position sensor GND short
2-2-1 Passenger side damper motor position sensor open circuit or shorted to 12 V
2-2-2 Passenger side damper motor position sensor GND short
2-3-1 Ventilation damper motor position sensor open circuit or shorted to 12 V
2-3-2 Diagnostic trouble code (DTC) Ventilation damper motor position sensor GND short
2-3-3 Floor-defrost damper motor position sensor open circuit or shorted to 12 V
2-3-4 Floor-defrost damper motor position sensor GND short
2-3-5 Recirculation damper motor position sensor open circuit or shorted to 12 V
2-3-6 Recirculation damper motor position sensor GND short
3-1-1 Driver’s side damper motor shorted to GND or 12 V
3-1-2 Passenger side damper motor shorted to GND or 12 V
3-1-3 Ventilation damper motor shorted to GND or 12 V
3-1-4 Floor/defrost damper motor shorted to GND or 12 V
3-1-5 Recirculation damper motor shorted to GND or 12 V
3-2-1 Driver’s side damper motor active too long
3-2-2 Passenger side damper motor active too long
3-2-3 Ventilation damper motor active too long
3-2-4 Floor/defrost damper motor active too long
3-2-5 Recirculation damper motor active too long
4-1-1 Passenger compartment fan overcurrent or sticking
4-1-2 Driver’s side passenger compartment temperature sensor intake fan GND short
4-1-3 Driver’s side passenger compartment temperature sensor intake fan, no control voltage
4-1-4 Driver’s side passenger compartment temperature sensor intake fan sticking
4-1-5 Passenger side passenger compartment temperature sensor fan GND short
4-1-6 Passenger side passenger compartment temperature sensor intake fan, no control voltage
4-1-7 Passenger side passenger compartment temperature sensor intake fan sticking
4-1-8 Power stage, no control signal
4-1-9 Power stage giving faulty diagnostic signal
4-2-0 Control unit fault in program memory
5-1-1 Self-adjustment damper motor limit positions not carried out


Leave a Reply

Your email address will not be published.

9 − four =

This site uses Akismet to reduce spam. Learn how your comment data is processed.