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DTC P0522: Oil Pressure Sensor Low

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For circuit identification and wiring diagram, see WRANGLER wiring diagram in WIRING DIAGRAMS article.
NOTE: DTC P0522: OIL PRESSURE SENSOR LOW is monitored with ignition on. DTC may be stored in Powertrain Control Module (PCM) if PCM senses voltage on oil pressure sensor signal circuit less than .1 volt. Possible causes are: defective oil pressure sensor, defective PCM, defective connector or defective wiring.
  1. Turn ignition on, with engine off. Using scan tool, read oil pressure sensor voltage. If voltage is .2 volt or less, go to step 4). If voltage is more than .2 volt, go to next step.
  2. Turn ignition off. Visually inspect related connectors and wiring harness for damage. Repair connectors and wiring harness as necessary. Perform TEST VER-2A. If connectors and wiring harness are okay, go to next step.
  3. Turn ignition on, with engine off. Using scan tool, monitor oil pressure sensor voltage while wiggling oil pressure sensor wiring harness and connector. Oil pressure sensor is located at right rear of engine. If oil pressure sensor voltage changes while wiggling wiring harness, repair wiring harness or connector where wiggling caused voltage to change. Perform TEST VER-2A. If voltage does not change, test is complete.
  4. Turn ignition off. Disconnect oil pressure sensor connector. Oil pressure sensor is located at right rear of engine. Clean and/or repair connector as necessary. Turn ignition on, with engine off. Using scan tool, read oil pressure sensor voltage. If voltage is 4.5 volts or less, go to next step. If voltage is more than 4.5 volts, replace oil pressure sensor. Perform TEST VER-2A.
  5. Turn ignition off. Ensure oil pressure sensor connector is still disconnected. Turn ignition on, with engine off. Using a voltmeter, check voltage on oil pressure sensor connector, 5-volt supply circuit (Violet/Orange wire). If voltage is more than 4.9 volts, go to next step. If voltage is 4.9 volts or less, repair open 5-volt supply circuit. Perform TEST VER-2A.
  6. Turn ignition off. Ensure oil pressure sensor connector is still disconnected. Disconnect PCM connectors. PCM is located in engine compartment. See PCM LOCATION table under SYSTEM DIAGNOSTICS. Clean and/or repair connectors as necessary. Using an ohmmeter, check resistance between ground and oil pressure sensor connector, signal circuit (Gray/Yellow wire). If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair signal circuit for short to ground. Perform TEST VER-2A.
  7. Ensure ignition is off. Ensure oil pressure sensor connector and PCM connectors are still disconnected. Using an ohmmeter, check resistance between oil pressure sensor connector, signal circuit (Gray/Yellow wire) and sensor ground circuit (Brown/Yellow wire). If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair sensor signal circuit for short to sensor ground circuit. Perform TEST VER-2A.
  8. At this time, PCM is assumed to be defective. Replace PCM. Perform TEST VER-2A.
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