Guide To P0493 OBD Error Code Solutions

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The trouble code P0493 is related to the vehicle’s electric cooling fan or the auxiliary fan which would help the radiator to maintain the engine coolant temperatures which are within the parameters of the manufacturer. Generally, this fan is also triggered by the vehicle's HVAC system.

This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another. This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

The P0493 can be defined as Fan Overspeed. It is an OBD code for a voltage issue with the electric cooling fan control system where the signal being sent to the engine computer is not correct. This would mean that there are some issues in the ground or the fan is not working effectively.

What causes this problem with the Fan Overspeed?

• Some faults in the electric fan motor
• The electric fan relay might have some defects
• Defective wiring and electrical connectors for the fan
• There can be some quirks in the engine coolant temperature sensor
• The electric fan fuse might be blown out

1. Engine Coolant Temperature Sensor - There can be some issues with the Engine Coolant Temperature Sensor due to which you may see P0493 code appearing over and over again. Visit us to buy best quality Coolant Temperature Sensor online.
2. Oil Pressure Sender - A lot of issues can arise due to defective Oil Pressure Sender. Did you just see P0493 code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.
3. Powertrain Control Module - Faulty Powertrain Control Module can be the reason why P0493 code is flashing. Visit us to purchase top notch Powertrain Control Module online.
4. Air Intake Temperature Sensor - It is an important auto part which needs full care. A faulty Air Intake Temperature Sensor can be a reason behind the flashing up of P0493 code.
5. Engine Control Module - OBD Code P0493 can appear because of faulty Engine Control Module.

You might be thinking that how would you diagnose these problems? We at Parts Avatar Canada would help you diagnose the major symptoms easily.

Common Symptoms

• Flashing up of the check engine light
• The vehicle might be running hotter than normal in conditions such as stop-and-go traffic

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• The damaged wiring and or electrical connections should be replaced
• Carefully replace the electric cooling fan relay
• Make sure to replace or repair the electric cooling fan
• The blown fuses should be repaired properly

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Here are some steps which you should follow in order to diagnose this fault code:

The mechanic should start by giving a visual inspection of the fan, its wiring and electrical connectors, associated fuses and the control relay

If there is no need to repair anything, they will then trigger the fan to power by jumping the relay, sending 12 volts directly to the fan, or triggering it via the air conditioning

If and under what conditions the fan turns on will help determine the root cause of the issue

For example, if the fan turns on when the relay is jumped but does not when the air conditioning is triggered, chances are high the relay is bad

If the fan doesn’t turn on at all, then there would a need to replace the faulty motor. The key with a P0493 is first confirming if the fan motor is good and then moving on to the next most common cause, typically the relay

Common Mistakes When Diagnosing The P0493 Code

It can turn out to be a big mistake to rush and replace parts like the fan and the relay can become costly, so it is very important to test each and every component