P0131 Fault Code — O2 Sensor Low Voltage (Bank 1 Sensor 1)

Severity: 🟠 High — diagnose within 1–2 days

Upstream O2 sensor stuck in lean — sensor or exhaust leak.

Common Symptoms

Common Causes

How We Fix It

Replace O2 sensor, fix exhaust leak, check fuel pressure.

Frequently Asked Questions

What does P0131 mean?

P0131 (O2 Sensor Low Voltage (Bank 1 Sensor 1)) means Upstream O2 sensor stuck in lean — sensor or exhaust leak. Common symptoms include engine running lean, hesitation, poor economy.

How much does P0131 repair cost in Hyderabad?

At GarageNation Hyderabad, we diagnose P0131 with dealer-grade scan tools and provide a fixed quote before any work begins. Call +91 8106316369 for an estimate.

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