What does fan rationality check mean?
Table of Contents. Error Code P0483 is defined as Cooling Fan Rationality Check Malfunction. This means there’s a voltage reading that shows the cooling fan is not responding; even when it is commanded to turn on or off.
What can cause a radiator fan to not work?
Six things may prevent an electric cooling fan from coming on: Defective temperature switch, coolant sensor or other sensor. Engine thermostat is stuck OPEN (engine never gets hot enough to turn on the fan) Faulty fan relay.
What code is P0480?
OBD Code P0480 – Cooling Fan Relay 1 Control Circuit Diagnostic Trouble Code P0480 is defined as Cooling Fan 1 Control Circuit Malfunction. It indicates that PCM has detected an incorrect amount of voltage (high or low) in the electric cooling fan control circuit.
When should radiator fans kick on?
about 200 degrees Fahrenheit
Your radiator fan should kick in at about 200 degrees Fahrenheit. If you notice your vehicle is overheating or at the very least running hotter than it normally does, listen for the fan to see if you can hear it.
How do I know if my radiator fan is bad?
Symptoms of a Bad or Failing Cooling/Radiator Fan Motor
- Cooling fans do not come on. The most common symptom of a faulty cooling fan motor are cooling fans that do not come on.
- Vehicle overheating. Another symptom of a possible problem with the cooling or radiator fan motors is the vehicle overheating.
- Blown fuse.
How do I fix the cooling fan 1 control circuit malfunction?
What repairs can fix the P0480 code?
- Replacing the VSS sensor.
- Replacing the engine coolant temp sensor.
- Repairing or replacing of the fan wiring harness.
- Replacing cooling fan 1.
- Repairing electrical connection issues.
- Replacing AC pressure switch.
- Replacing the fan control relay.
When do I get a p0483 code on my PC?
The P0483 code is detected when the Powertrain Control Module (PCM) detects that the commanded state of the driver and the actual state of the control circuit do not match. The ECM controls the cooling fan by grounding the cooling fan control circuit which turns ON the cooling fan relay.
Why is my p0483 cooling fan not working?
P0483 could have been set because of mechanical temperature issues (incorrect coolant temperature due to stuck thermostat/failed water pump); or electrical issues (failed cooling fan circuit). These cannot be overlooked in the troubleshooting stage, especially when dealing with an intermittent problem.
What are the codes for a cooling fan?
Related cooling fan trouble codes include: P0480 Cooling Fan 1 Control Circuit Malfunction. P0481 Cooling Fan 2 Control Circuit Malfunction. P0482 Cooling Fan 3 Control Circuit Malfunction. P0484 Cooling Fan Circuit Over Current. P0485 Cooling Fan Power/Ground Circuit Malfunction.
What is the diagnostic code for cooling fan rationality check?
P0483 is a diagnostic trouble code (DTC) for “Cooling Fan Rationality Check Malfunction”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.