P0203 Fuel injector cylinder number 3
P0122 Throttle position sensor voltage low
P1478 Cooling fan driver fault
These would all be separate issue, The one code that stand out is P1478 as this vehicle uses a cooling fan relay, P1478 for this type of vehicle may be invalid.
Here a fuel injector on a Dodge , this connection was not properly connected, as the locking tabs where broken just fixing the connection corrected this injector code.
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