U0104 on Volkswagen ID.4
Factory diagnostic protocol and troubleshooting wire for fault code U0104 specifically for the Volkswagen ID.4 (2021–2026, Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh)).
1. Symptoms of U0104 on Volkswagen ID.4
When the Engine Control Module (ECM/PCM) on your Volkswagen ID.4 (Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh)) logs fault code U0104, drivers commonly observe:
2. Most Likely Causes on Volkswagen ID.4
Historical warranty claims and technical repair bulletins for Volkswagen ID.4 point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Volkswagen ID.4
Clean snow, ice, mud, or dead bugs off front radar emblem. on the Volkswagen ID.4 equipped with Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh).
Verify power feed to radar sensor. on the Volkswagen ID.4 equipped with Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh).
Execute optical/radar alignment procedure if bumper was removed. on the Volkswagen ID.4 equipped with Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh).
Clear DTCs and test cruise on highway. on the Volkswagen ID.4 equipped with Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh).
Equipment for Diagnosing Volkswagen ID.4 (U0104)
Volkswagen ID.4 OEM Replacement Sensor
Direct-fit replacement assembly engineered to OEM tolerances for Volkswagen ID.4.
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 Volkswagen ID.4
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Volkswagen ID.4:
4. Volkswagen ID.4 U0104 FAQs
What causes code U0104 to trigger on a Volkswagen ID.4?
On the Volkswagen ID.4 (Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh)), 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 Volkswagen ID.4?
On the Volkswagen ID.4, the 16-pin DLC diagnostic connector is located Driver side footwell lower instrument interface. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my Volkswagen ID.4 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.