P0137 on BMW i4
Factory diagnostic protocol and troubleshooting wire for fault code P0137 specifically for the BMW i4 (2022–2026, Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP)).
1. Symptoms of P0137 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 P0137, 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
Listen for exhaust ticking or black soot around flex pipe, flanges, and sensor bungs before the catalytic converter. on the BMW i4 equipped with Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP).
Monitor B1S2 voltage. Snap the throttle to enrich mixture; voltage should briefly spike above 0.8V. If it remains 0.0V–0.1V, sensor is defective or shorted. on the BMW i4 equipped with Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP).
Unplug harness, remove old sensor with 7/8 socket, install replacement sensor and plug firmly. on the BMW i4 equipped with Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP).
Clear DTCs and verify B1S2 holds steady between 0.45V and 0.75V during steady highway cruising. on the BMW i4 equipped with Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP).
Equipment for Diagnosing BMW i4 (P0137)
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 P0137 FAQs
What causes code P0137 to trigger on a BMW i4?
On the BMW i4 (Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP)), P0137 is most frequently caused by Exhaust leak upstream of or directly at the Sensor 2 bung letting in fresh air or Faulty downstream oxygen sensor.
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 P0137?
Yes. Vehicle is fully drivable, but Check Engine Light will remain illuminated. Given that P0137 carries a Low severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.