P0522 Engine Oil Pressure Sensor/Switch Circuit Low Voltage

P0522 indicates low voltage from the engine oil pressure sensor or switch circuit. The signal is lower than expected and may be electrical or reflect low pressure depending on the system.

Code status

Needs verification

Not yet verified against SAE J2012_202509 / J2012DA. Treat unverified rows as a lookup aid, not repair authority.

System
Speed / Idle
Scope
iso-sae-controlled-p0
Standard
SAE J2012 / ISO 15031-6
Source
legacy-import

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not assume this is only a bad sensor; actual low oil pressure can damage the engine quickly.

Useful checks before replacing parts

Related OBD-II codes

These nearby speed / idle entries can help compare wording and fault area. They may share the same verification status as the source database.