U0104 on Honda HR-V
Factory diagnostic protocol and troubleshooting wire for fault code U0104 specifically for the Honda HR-V (2023–2026, 2.0L DOHC i-VTEC 4-Cyl (158HP / CVT AWD)).
1. Symptoms of U0104 on Honda HR-V
When the Engine Control Module (ECM/PCM) on your Honda HR-V (2.0L DOHC i-VTEC 4-Cyl (158HP / CVT AWD)) logs fault code U0104, drivers commonly observe:
2. Most Likely Causes on Honda HR-V
Historical warranty claims and technical repair bulletins for Honda HR-V point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Honda HR-V
Clean snow, ice, mud, or dead bugs off front radar emblem. on the Honda HR-V equipped with 2.0L DOHC i-VTEC 4-Cyl (158HP / CVT AWD).
Verify power feed to radar sensor. on the Honda HR-V equipped with 2.0L DOHC i-VTEC 4-Cyl (158HP / CVT AWD).
Execute optical/radar alignment procedure if bumper was removed. on the Honda HR-V equipped with 2.0L DOHC i-VTEC 4-Cyl (158HP / CVT AWD).
Clear DTCs and test cruise on highway. on the Honda HR-V equipped with 2.0L DOHC i-VTEC 4-Cyl (158HP / CVT AWD).
Equipment for Diagnosing Honda HR-V (U0104)
Honda HR-V OEM Replacement Sensor
Direct-fit replacement assembly engineered to OEM tolerances for Honda HR-V.
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 Honda HR-V
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Honda HR-V:
4. Honda HR-V U0104 FAQs
What causes code U0104 to trigger on a Honda HR-V?
On the Honda HR-V (2.0L DOHC i-VTEC 4-Cyl (158HP / CVT AWD)), 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 Honda HR-V?
On the Honda HR-V, the 16-pin DLC diagnostic connector is located Driver footwell lower trim near kick panel. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my Honda HR-V 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.