Oil pressure sensor
Repair Procedures
Removal
Disconnect the negative battery cable.
Remove the generator.
(See Engine Electrical System - "Alternator")
Disconnect the oil pressure switch connector (A), then remove the oil pressure switch (B).
Tightening torque: 7.8–11.8 N·m

Install in the reverse order of removal.
Sealant: THREEBOND 2403 Thickness: 0.2–0.4 mm (0.008–0.016 in.)

Inspection
Using an ohmmeter, check the continuity between the terminal and the body.
If there is no continuity, replace the oil pressure switch.

Check the continuity between the terminal and the body while gently pushing the thin wire. If there is continuity even when the thin wire is pressed, replace the switch.
If there is no continuity when a pressure of 50 kPa (0.50 kgf/cm², 7.25 psi) is applied through the oil hole, the switch is operating correctly.
Check for air leakage. If air leaks, the diaphragm is damaged. Replace it.

Test yourself
A quick Kia Stinger CK quiz: every answer comes with an explanation and a link to the manual page.