P0137 – BMW DTC

BMW DTC P0137 – O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

DTC P0137 meaning on BMW

The Diagnostic Trouble Code (DTC) P0137 for BMW indicates that the oxygen sensor circuit located after the catalytic converter on Bank 1 is registering a low voltage condition. This sensor is known as ¨Bank 1 Sensor 2¨ and is responsible for monitoring the efficiency of the catalytic converter by measuring the oxygen content in the exhaust gases.

BMW DTC P0137 symptoms

Symptoms associated with DTC P0137 on a BMW may include:

• Check Engine Light (MIL) illuminated on the dashboard
• Decreased fuel efficiency
• Engine running rough or misfiring
• Increased emissions

BMW DTC P0137 causes

Common causes of DTC P0137 on a BMW include:

• Failed oxygen sensor (Bank 1 Sensor 2)
• Wiring or connector issues in the oxygen sensor circuit
• Exhaust leaks near the sensor
• Faulty catalytic converter

BMW DTC P0137 seriousness

While DTC P0137 may not cause immediate drivability issues, it can lead to decreased fuel efficiency and increased emissions. Ignoring this fault can potentially cause damage to the catalytic converter over time, resulting in more costly repairs.

How to diagnose DTC P0137 on BMW

To diagnose DTC P0137 on a BMW, you can perform the following steps:

1. Use an OBD-II scanner to retrieve the fault code and confirm it is P0137.
2. Inspect the wiring and connectors of the Bank 1 Sensor 2 oxygen sensor for any damage or corrosion.
3. Check for exhaust leaks near the sensor that could be affecting its readings.
4. Test the oxygen sensor using a multimeter to verify its functionality.

How to fix DTC P0137 on BMW

To fix DTC P0137 on a BMW, you can try the following solutions:

1. Replace the Bank 1 Sensor 2 oxygen sensor if it is faulty.
2. Repair any damaged wiring or connectors in the sensor circuit.
3. Address any exhaust leaks near the sensor by fixing or replacing affected components.
4. If necessary, replace the catalytic converter if it is determined to be the cause of the low voltage reading.

How to erase DTC P0137 on BMW

To erase DTC P0137 on a BMW after fixing the underlying issue, you can:

1. Use an OBD-II scanner to clear the fault code from the vehicle’s memory.
2. Drive the vehicle for a short distance to allow the system to retest and ensure the fault does not reoccur.

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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