P0483 Code - Cooling Fan Rationality Check Malfunction

What Does P0483 Mean?

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. When you see P0483 engine fault code on your engine code reader this description will help you.

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obd code P0483	obd2 P0483	P0483 car code	diagnostic code P0483
car code P0483	check engine code P0483	fehlercode P0483	P0483 fiat
codigo P0483	codigo falla P0483	P0483 kody b??dów	codigo de falla P0483

What are the common causes of P0483 ?

Common causes include a bad cooling fan motor or a faulty cooling fan relay. Less common causes include corroded or loose electrical connectors, a faulty engine coolant temperature sensor, and open or shorted electrical wiring (often resulting in a blown fuse).

How do you troubleshoot P0483 ?

In order to repair the issues that cause the P0483 code, a technician may perform some or all of the following, being sure to clear the code and retest after each possible fix:

• Perform a voltage and ground test at the cooling fan motor.
• Test system fuses, and replace any that are blown.
• Check the relays and circuitry within the system, and repair or replace any as necessary.
• Check the engine temperature readings and compare with the manufacturer’s specifications. Repair or replace the coolant temperature sensor if these do not match.
• Inspect and test all wiring and switches that connect to the PCM. Repair or replace as necessary.
• Monitor the voltage of the fan by hand, and compare to the manufacturer’s specifications. If the numbers match, replace or repair the fan motor. If they do not match, replace or repair the rheostat or the resistor assembly.

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