Advanced Diagnostics
Advanced DiagnosticsDTC P0523: Rocker Arm Oil Pressure Sensor Circuit High Voltage Engine Type: J35Z2)
General Description
The rocker arm oil pressure sensor detects the engine oil pressure of the variable cylinder management (VCM) system. When the voltage from the rocker arm oil pressure sensor is a set value or more for a specified time, the powertrain control module (PCM) detects a malfunction and a DTC is stored.
Monitor Execution, Sequence, Duration, DTC Type, OBD Status
Enable Conditions
Malfunction Threshold
The rocker arm oil pressure sensor output voltage is 4.79 V or more for at least 2.0 seconds.
Driving Pattern
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on.
Diagnosis Details
Conditions for illuminating the MIL
When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the PCM memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the freeze frame data are stored.
Conditions for clearing the MIL
The MIL will be cleared if the malfunction does not recur during three consecutive drive cycles in which the engine conditions are similar to the first time the malfunction was detected. The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.