BMW DTC P1137 – O2 Sensor Heater Circuit Signal Intermittent (Bank 1 Sensor 2)
DTC P1137 meaning on BMW
DTC P1137 on a BMW indicates an issue with the O2 sensor heater circuit signal for Bank 1 Sensor 2. This means that the heating element in the downstream oxygen sensor located after the catalytic converter on the first bank of cylinders is experiencing intermittent signal problems.
BMW DTC P1137 symptoms
Symptoms of DTC P1137 on a BMW may include poor fuel economy, rough idling, hesitation during acceleration, and an illuminated check engine light on the dashboard.
BMW DTC P1137 causes
The common causes of DTC P1137 on a BMW include a faulty O2 sensor, damaged wiring or connectors in the sensor circuit, a blown fuse related to the sensor heater, or a problem with the engine control module (ECM).
BMW DTC P1137 seriousness
While DTC P1137 may not cause immediate drivability issues, it can lead to decreased fuel efficiency and increased emissions. Ignoring this fault code can potentially cause damage to the catalytic converter over time.
How to diagnose DTC P1137 on BMW
To diagnose DTC P1137 on a BMW, a mechanic would typically use a scan tool to retrieve the fault code and then perform a visual inspection of the O2 sensor and its wiring. Testing the sensor’s resistance and checking for proper voltage supply to the heater circuit are also common diagnostic steps.
How to fix DTC P1137 on BMW
Fixing DTC P1137 on a BMW usually involves replacing the faulty O2 sensor, repairing any damaged wiring or connectors, checking and replacing any blown fuses, or addressing any issues with the engine control module. Once the underlying cause is resolved, the fault code should be cleared.
How to erase DTC P1137 on BMW
To erase DTC P1137 on a BMW, the fault code can be cleared using a diagnostic scan tool. After the repair has been completed and the issue causing the fault code has been resolved, the scan tool can be used to clear the code and reset the check engine light.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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