Code
P0521
Lubrication
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Most likely causes
- حساس تالف
- ضغط حقيقي منخفض
Symptoms you may notice
- Oil warning light
- Check engine light
Checks to run
- Verify real oil pressure with a gauge
- Test the sensor
- Check wiring
Tools you may need
Oil pressure gauge
Multimeter
Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.