DTC P0986

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DTC P0986: Shift Solenoid Valve E Circuit High

General Description

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

Shift solenoid valve E opens/closes the drain circuit by the transmission control module (TCM) ON/OFF commands. The switching of the fluid passages to supply/discharge the hydraulic pressure of the parking actuator valve which controls the parking system, is done by the shift solenoid valve E ON/OFF control. The TCM commands the driver circuit to turn ON shift solenoid valve E. The driver circuit equips diagnosis function to detect and output open circuit and short circuit of shift solenoid E and returns a return signal against the TCM command. When the return signal does not match to the TCM command to turn OFF shift solenoid valve E, the TCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type

Execution	Continuous
Sequence	None
Duration	600 milliseconds or more
DTC Type	One drive cycle, MIL on, Shift position indicator blinks

Enable Conditions

Condition	Minimum	Maximum
12 volt battery voltage [Battery Voltage]	11.0 V	-

[ ]: HDS Parameter

Malfunction Threshold

The return signal does not match to the command to turn OFF shift solenoid valve E for at least 600 milliseconds.

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.

Shift solenoid valve E SH E line open (includes a loose or disconnected connector)
Shift solenoid valve E internal circuit open
TCM internal circuit failure

Confirmation Procedure

Operating Condition

Start the engine.

With the HDS

None.

Diagnosis Details

Conditions for setting the DTC

When a malfunction is detected, the MIL comes on, the shift position indicator blinks, and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the TCM memory.

Conditions for clearing the DTC

The shift position indicator comes off by turning the vehicle to the OFF (LOCK) mode. 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.