P0204 on BMW i4
Factory diagnostic protocol and troubleshooting wire for fault code P0204 specifically for the BMW i4 (2022–2026, Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP)).
1. Symptoms of P0204 on BMW i4
When the Engine Control Module (ECM/PCM) on your BMW i4 (Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP)) logs fault code P0204, drivers commonly observe:
2. Most Likely Causes on BMW i4
Historical warranty claims and technical repair bulletins for BMW i4 point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for BMW i4
Measure resistance across pins (12–16 ohms). on the BMW i4 equipped with Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP).
Check that ECM pulse reaches the connector. on the BMW i4 equipped with Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP).
Replace the faulty injector with OEM unit. on the BMW i4 equipped with Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP).
Clear DTC memory and confirm smooth operation. on the BMW i4 equipped with Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP).
Equipment for Diagnosing BMW i4 (P0204)
BMW i4 OEM Replacement Sensor
Direct-fit replacement assembly engineered to OEM tolerances for BMW i4.
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 BMW i4
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the BMW i4:
4. BMW i4 P0204 FAQs
What causes code P0204 to trigger on a BMW i4?
On the BMW i4 (Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP)), P0204 is most frequently caused by Faulty Cylinder 4 fuel injector or Broken wiring harness.
Where is the OBD-II port located on my BMW i4?
On the BMW i4, the 16-pin DLC diagnostic connector is located Under driver steering column OBD 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 BMW i4 with code P0204?
No. Cylinder 4 is disabled, causing rough running and unburned fuel delivery issues. Given that P0204 carries a Critical severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.