Code
P0131
Emissions
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Most likely causes
- حساس تالف
- تسرب عادم
Symptoms you may notice
- Check engine light
- Worse economy
Checks to run
- Check O2 switching live
- Inspect for exhaust leaks
- Test wiring
Tools you may need
OBD-II scanner
Multimeter
Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.