Cooling fan RPM error.
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P1484 - Cooling Fan System Performance Cooling fan rpm error. When I had that code it was accompanied by p0495 .. Which is cooling fan speed too high ... I changed the fan clutch because they are notarious for problems .. And then 3 days later changed the water pump .. Cost me about 250$ to do it myself ... The shop was gonna charge almost 1800$ haven't had a problem since!
DTC P1484 is a Diagnostic Trouble Code that indicates an issue with the engine's air intake system, specifically related to the intake air temperature sensor or the associated circuit. This code often points to problems such as a faulty sensor, wiring issues, or poor connections. It can lead to reduced engine performance and efficiency, so it's important to diagnose and address the underlying issue promptly. To resolve it, a thorough inspection of the sensor and its connections is recommended.
DTC P1221 code is: Excessive Difference Between Throttle Position Sensors which means there is something wrong with the electronic throttle positioning sensor system, probably needs replaced
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