📖 What Does P0131 Mean?
The upstream oxygen sensor on bank 1 is reading consistently low voltage, indicating a lean condition or sensor failure.
Symptoms
Poor fuel economy, rough idle, lean running condition, check engine light, hesitation.
Common Causes
Faulty oxygen sensor, exhaust leaks before sensor, wiring short to ground, contaminated sensor.
Possible Solutions
Replace oxygen sensor, repair exhaust leaks, check wiring for shorts, clean sensor area of contamination.
Recommended Parts & Tools
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📦 Parts Needed
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Frequently Asked Questions about P0131
How serious is P0131?
This code has a medium severity level. This should be diagnosed and repaired soon to prevent further issues.
Can I drive with P0131?
You can typically drive short distances, but have it diagnosed as soon as possible.
How much does it cost to fix P0131?
Repair costs vary depending on the root cause, but typically range from $100-300 including parts and labor.
Related Diagnostic Codes
Other codes that may appear with P0131
Oxygen Sensor Circuit Malfunction Bank 1 Sensor 1
Oxygen Sensor Circuit High Voltage Bank 1 Sensor 1
Oxygen Sensor Circuit Slow Response Bank 1 Sensor 1
Oxygen Sensor Circuit No Activity Detected Bank 1 Sensor 1
Oxygen Sensor Heater Circuit Malfunction Bank 1 Sensor 1
Catalyst System Efficiency Below Threshold Bank 1
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system