For Shop Owners

P0203 HYUNDAI - Injector Circuit Open- Cylinder 3

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • Faulty fuel injector 3
  • Fuel Injector 3 harness is open or shorted
  • Fuel injector 3 circuit poor electrical connection
What does this mean?

When is the code detected?

The P0203 is set if the Engine Control Module (ECM) is detects a low or high voltage drop or resistance at the injector 3.

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Lack/Loss of Power
  • The engine may be harder to start
  • Engine hesitation

P0203 HYUNDAI Description

Engine Control Module (ECM) checks the injectors circuit resistance and monitors the voltage drop during normal operation. The ECM will trigger the P0203 code when the resistance or voltage drop at the injector 3 is out of specifications.
OBDII Code P0203 Hyundai - Injector Circuit Open- Cylinder 3 -

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P0203 HYUNDAI Comments

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Any information is appreciated. Thanks
Repair Importance Level: 3
1=Low 2=Medium 3=High
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard

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