DFIR00203D — Frequently Asked Questions
Verified answers about the Delphi DFIR00203D 1.4 CRDi (D4FC) Common Rail Injector (Hyundai/Kia).
What is Delphi injector DFIR00203D?
A Delphi solenoid common-rail diesel injector for the Hyundai-Kia 1.4 CRDi (D4FC) engine. Hyundai/Kia OE 33800-2A760/33800-2A780; Delphi equivalent R00203D.
Which vehicles use DFIR00203D?
Hyundai i20/i30/ix20 and Kia Cee'd/Rio/Venga 1.4 CRDi (D4FC).
Is it solenoid or piezo?
It is a Delphi solenoid common-rail injector.
Does DFIR00203D need coding?
Yes - code the injector trim code to the correct cylinder with GDS/diagnostic when fitting.
What are the OE part numbers?
Hyundai/Kia 33800-2A760 and 33800-2A780 reference Delphi DFIR00203D (R00203D).
Is this the same as the 1.5 or 1.6 CRDi injector?
No - DFIR00203D is the 1.4 CRDi (D4FC) part. Confirm the OE number and engine code before fitting.
What are the symptoms of failure?
Rough idle, vibration, hard starting, black smoke, power loss/limp mode and an EML.
Why does my 1.4 CRDi run rough?
A worn or leaking injector unbalances fuelling; read live back-leakage data and bench-test the suspect cylinder.
What causes these injectors to fail?
Poor fuel filtration, contamination and back-leakage wear - fix the cause first.
Does a remanufactured DFIR00203D perform like new?
A properly remanufactured injector is bench-tested and recalibrated to the Delphi plan, then trim-coded on fitment.