DTC P0522

DTC P0522:  Rocker Arm Oil Pressure Sensor Circuit Low Voltage

General Description 

Courtesy of HONDA, U.S.A., INC.

The rocker arm oil pressure sensor detects engine oil pressure in the valve pause system. When the voltage from the rocker arm oil pressure sensor is a set value for a specified time, the powertrain control module (PCM) detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status 

Execution	Continuous
Sequence	None
Duration	2 seconds or more
DTC Type	One drive cycle, MIL on
OBD Status	PASSED/FAILED/NOT COMPLETED (STILL TESTING)

Enable Conditions 

Condition	Minimum	Maximum
Barometric pressure[BARO SENSOR]	69 kPa (520 mmHg, 20.5 inHg)	-
No active DTCs set (prevents monitor from running)	P0117, P0118, P0523

[ ]: HDS Parameter

Malfunction Threshold 

The rocker arm oil pressure sensor output voltage [ROCKER ARM OIL PRESSURE SENSOR] is 0.18 V or less for at least 2 seconds.

Possible Cause 

NOTE:  The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

• Rocker arm oil pressure sensor POIL line short to ground
• Rocker arm oil pressure sensor VCC line open
• Rocker arm oil pressure sensor failure
• PCM internal circuit failure

Diagnosis Details 

Conditions for setting the DTC 

When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.

Conditions for clearing the DTC 

The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.