Hello.
Code P0263 for Hyundai is triggered when the PowerTrain Control Module (PCM) detects that the acceleration rate of the crankshaft for Cylinder #1 was less than a calibrated amount. During normal conditions the PCM turns the fuel Injectors "on" and "off" in the Fuel Injection System.
Symptoms
Possible symptoms of OBD code P0263 Hyundai
� Engine Light ON (or Service Engine Soon Warning Light) � Engine Misfire � Engine Run Rough � Low MPG
Causes
Possible causes of OBD code P0263 Hyundai
� Fuel Injector #1 � Faulty or Corroded Fuel Injector #1 Connector � Plugged/blocked #1 Fuel Injector � Dirty #1 Fuel Injector
https://www.2carpros.com/articles/how-to-test-a-fuel-injector
https://www.2carpros.com/articles/how-to-replace-a-fuel-injector
Hope this helps, please keep us up to date on your repairs.
Thanks,
Dave H
Sunday, February 21st, 2021 AT 1:07 PM