How do I fix the cooling fan 1 control circuit malfunction?
How To Correct P0480 Cooling Fan Relay 1 Control Circuit
- Repair or replace the faulty cooling fan 1.
- Replace the frayed vehicle speed sensor.
- Replace the inoperative AC pressure switch.
- Repair the faulty electrical connections.
- Repair or replace the defective fan wiring harness.
- Replace the engine coolant temperature sensor.
What is a fan 2 control circuit?
Diagnostic trouble code (DTC) P0481 stands for “ Fan 2 Control Circuit.” Cooling fan relays control the power supplied to your engine’s cooling fans. If the engine temperature reaches a point that’s considered unsafe, the PCM will command one of the cooling fan relays to activate one of the fans.
How do I fix code P0691?
How To Correct P0691 Cooling Fan 1 Relay Control Circuit Low
- First of all, the car mechanic should verify the code by using a scanner.
- After that the wiring schematic for the vehicle should be obtained.
- You can always repair and update the PCM wiring and connectors.
What is code P0481 mean?
What the P0481 code means. P0481 is the OBD-II generic code for a problem with the control circuit for cooling fan 2. The cooling fan should be commanded on under certain conditions where the engine requires more cooling, and this is controlled via the cooling fan relay.
Can I drive with P0480 code?
If the P0480 code is found and the fans are not operating then the vehicle should not be driven.
What is a cooling fan relay?
A cooling fan relay is used on vehicles that have an electrical fan to cool the engine. The function of the cooling fan relay is to convert a low voltage signal from either the electronic control module (ECM) or a thermostatically controlled sensor.
What causes code P0480?
What the P0480 code means. P0480 means that the cooling fan 1 control circuit has a malfunction. The vehicles ECU has tried to control the cooling fan 1 and it has failed to operate or a fault was detected. The ECU then triggers a Check Engine Light to illuminate on the dashboard.
Where is fan relay located?
The fan relay is usually located near the bottom of the engine compartment on a metal frame member. The metal acts as a heat sink to keep the fan relay cool. So, unplug the connector at the relay and repeat the check for power. If you get power, you’ve got a bum relay.