DTC P0480: Radiator Cooling Fan Control Circuit Malfunction: Condition
WARNING: This page is about a different car, the 2002 Suzuki Esteem. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when Engine Control Module (ECM) detects low input voltage from radiator cooling fan relay with engine coolant temperature less than 199°F (93°C). ECM continuously monitors this circuit. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles. Possible causes are:
- Short or open circuit between ignition switch and ECM.
- Radiator cooling fan relay malfunction.
- ECM malfunction.