P0480 GMC code

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.

How do you fix trouble code P0480?

How To Correct P0480 Cooling Fan Relay 1 Control Circuit

  1. Repair or replace the faulty cooling fan 1.
  2. Replace the frayed vehicle speed sensor.
  3. Replace the inoperative AC pressure switch.
  4. Repair the faulty electrical connections.
  5. Repair or replace the defective fan wiring harness.
  6. Replace the engine coolant temperature sensor.

What can cause a P0480 code?

DTC P0480 will register when the PCM does not receive the proper amount of voltage from the cooling fan control circuit that should indicate that the fan works properly. If unaddressed, this trouble code can cause your engine to overheat and suffer further damage.

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.

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 are the symptoms of a faulty cooling fan switch?

Common signs include engine overheating, the Check Engine Light coming on, and a broken or shorter signal wire.

How are electrical cooling fans controlled?

The fans are controlled either with a thermostatic switch or by the engine computer, and they turn on when the temperature of the coolant goes above a set point. They turn back off when the temperature drops below that point. Rear-wheel drive cars with longitudinal engines usually have engine-driven cooling fans.

Where is coolant temperature sensor?

In most cars, the primary ECT sensor (ECT sensor 1) is installed near the thermostat in the cylinder head or block or on the thermostat housing. A second coolant temperature sensor could be installed in another part of the engine, or in the radiator.

What is the engine coolant temperature sensor?

What is a Coolant Temperature Sensor and How Does It Work? A coolant temperature sensor (CTS) (also known as an ECT sensor or ECTS (engine coolant temperature sensor) is used to measure the temperature of the coolant/antifreeze mix in the cooling system, giving an indication of how much heat the engine is giving off.

How do I fix code p0032?

Zitat von Youtube: Visually check the oxygen sensors electrical connections wire harness and metal tabs for any damages. If the damages are found then replace the oxygen. Sensor.

How do I fix the cooling fan 2 control circuit malfunction?

The most common potential repairs to address the P0481 code are as follows: Inspect the electrical connections to the cooling fan and relay to insure they are attached. Disconnect it, inspect the connections for corrosion or other issues, and then reinstall to insure a fresh electrical connection.