2024 Mazda P0520: What It Means & Is It Safe to Drive?
P0520 on the 2024 Mazda: Engine Oil Pressure Sensor/Switch Circuit Malfunction. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
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What this code means
The PCM has detected an electrical fault in the oil pressure sensor circuit. This may trigger the oil light even if pressure is normal.
Common causes on the 2024 Mazda
- Failed oil pressure sensor
- Wiring short or open in sensor circuit
- Rarely, actual low oil pressure
Symptoms
- Check Engine Light
- Oil pressure warning light may flicker or stay on
- Possible ticking/knocking if real low pressure is present
Typical fixes
- Verify actual oil pressure with a mechanical gauge
- Replace oil pressure sensor
- Repair wiring/connectors
Repair cost range
For a 2024 Mazda, repairs for P0520 typically fall between $120 and $500, depending on the root cause and labor rates in your area.