Diagnostic Trouble Code (DTC) Information
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
Condition
A diagnostic trouble code (DTC) is stored if there is a short-circuit to supply voltage or an open-circuit in the coolant temperature sensor circuit.
Substitute Value
Heater not activated.
Possible Source
- Contact resistance in control module connector.
- Open-circuit on signal ground cable.
- Open-circuit or short-circuit to supply voltage in signal cable.
- Defective coolant temperature sensor.
Fault symptom[s]
- Poor heating in passenger compartment.