DTC Advanced Diagnostics: P2653 (3.0L Engine)

DTC P2653: Rocker Arm Oil Control Solenoid Circuit Low Voltage

General Description

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

The powertrain control module (PCM) commands the rocker arm control solenoid to switches the valve timing by opening and closing the oil passage to the variable cylinder management (VCM) mechanism. If the malfunction detection signal is OFF (low) while the PCM outputs ON (high) to the rocker arm control solenoid, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type

Execution	Continuous
Sequence	None
Duration	0.5 second or more
DTC Type	One drive cycle, MIL on

Enable Conditions

Condition	Minimum	Maximum
12 volt battery voltage [Battery]	10.0 V	-

[ ]: HDS Parameter

Malfunction Threshold

The malfunction detection signal is OFF (low) for at least 0.5 second while the PCM outputs ON (high) to the rocker arm control solenoid.

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 control solenoid CSS line short to ground
Rocker arm oil control solenoid 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, the freeze data, and the on-board snapshot 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, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.