P0137Low urgency

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

Emission · Oxygen Sensors

✅ Safe to drive. An exhaust leak near the sensor can cause this code — inspect before replacing the sensor.

What this means

The downstream Bank 1 O2 sensor is outputting a voltage persistently below 0.1V — indicating a lean exhaust reading that could be caused by an exhaust leak, a failed sensor, or a genuinely lean exhaust.

Likely causes

Exhaust leak near downstream sensorMost common
Failed downstream O2 sensorMost common
Lean exhaust from upstream fuel issueCommon

Estimated repair cost

O2 sensor$80 – $250

Exhaust repair$100 – $400

Upstream fuel system diagnosis$100 – $500

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Frequently asked questions about P0137

What does P0137 mean?

Is P0137 serious?

Safe to drive. An exhaust leak near the sensor can cause this code — inspect before replacing the sensor.

How much does it cost to fix P0137?

Repair costs for P0137 range from $80 – $250 depending on the root cause and your vehicle.

Can I drive with P0137?

Yes, the vehicle is safe to drive. Schedule a repair at your convenience.

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