DTC P055B (1.5 L Engine)

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DTC P055B: Rocker Arm Oil Pressure Sensor Out of Range

General Description

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

The rocker arm oil pressure sensor detects engine oil pressure in the VTEC 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

Execution	Continuous
Sequence	None
Duration	6 seconds or more
DTC Type	Two drive cycles, MIL on

Enable Conditions

Condition
Vehicle	ON mode

Malfunction Threshold

The rocker arm oil pressure sensor output voltage [ (Rocker Arm) Oil Pressure Sensor (B) Voltage] is 0.27 V or less for at least 6 seconds.

[ ]: HDS Parameter

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 failure
PCM internal circuit failure

Diagnosis Details

Conditions for setting the DTC

When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, the MIL come on a Confirmed DTC and the freeze data are stored.

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.