How to fix Hyundai P0170: Fuel Trim Bank 1

Definition meaning and fixes Hyundai P0170 : Fuel Trim Bank 1 Diagnostic Trouble Code

What is a Fuel Trim?
A fuel trim is the adjustment the engine computer makes to the fuel mixture to maintain a balanced air/fuel ratio.
A P0170 code can be difficult to troubleshoot, since it can be caused by many different things.

Causes of a Hyundai P0170 DTC
Upstream 02 Sensor
MAF Sensor
Intake Air Leaks
Exhaust leak or Clogged
Ignition Misfiring
Fuel Pressure Faulty Fuel Injectors