U0104 on Hyundai Ioniq 5
Factory diagnostic protocol and troubleshooting wire for fault code U0104 specifically for the Hyundai Ioniq 5 (2022–2026, Dual Motor AWD (320HP) / Single Motor RWD (225HP) / Ioniq 5 N (641HP)).
1. Symptoms of U0104 on Hyundai Ioniq 5
When the Engine Control Module (ECM/PCM) on your Hyundai Ioniq 5 (Dual Motor AWD (320HP) / Single Motor RWD (225HP) / Ioniq 5 N (641HP)) logs fault code U0104, drivers commonly observe:
2. Most Likely Causes on Hyundai Ioniq 5
Historical warranty claims and technical repair bulletins for Hyundai Ioniq 5 point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Hyundai Ioniq 5
Clean snow, ice, mud, or dead bugs off front radar emblem. on the Hyundai Ioniq 5 equipped with Dual Motor AWD (320HP) / Single Motor RWD (225HP) / Ioniq 5 N (641HP).
Verify power feed to radar sensor. on the Hyundai Ioniq 5 equipped with Dual Motor AWD (320HP) / Single Motor RWD (225HP) / Ioniq 5 N (641HP).
Execute optical/radar alignment procedure if bumper was removed. on the Hyundai Ioniq 5 equipped with Dual Motor AWD (320HP) / Single Motor RWD (225HP) / Ioniq 5 N (641HP).
Clear DTCs and test cruise on highway. on the Hyundai Ioniq 5 equipped with Dual Motor AWD (320HP) / Single Motor RWD (225HP) / Ioniq 5 N (641HP).
Equipment for Diagnosing Hyundai Ioniq 5 (U0104)
Hyundai Ioniq 5 OEM Replacement Sensor
Direct-fit replacement assembly engineered to OEM tolerances for Hyundai Ioniq 5.
AstroAI Auto-Ranging Digital Multimeter
Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.
BlueDriver Bluetooth Pro OBDII Scan Tool
Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.
Other Common Fault Codes on Hyundai Ioniq 5
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Hyundai Ioniq 5:
4. Hyundai Ioniq 5 U0104 FAQs
What causes code U0104 to trigger on a Hyundai Ioniq 5?
On the Hyundai Ioniq 5 (Dual Motor AWD (320HP) / Single Motor RWD (225HP) / Ioniq 5 N (641HP)), U0104 is most frequently caused by Blocked or dirty front radar sensor in grille/bumper or Blown radar module fuse.
Where is the OBD-II port located on my Hyundai Ioniq 5?
On the Hyundai Ioniq 5, the 16-pin DLC diagnostic connector is located Driver side lower dash bezel near steering base. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my Hyundai Ioniq 5 with code U0104?
Yes. Normal driving is unaffected, but Adaptive Cruise Control will not engage. Given that U0104 carries a Low severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.