DTC Troubleshooting: P281E (CVT) - Honda Accord CR/CT 2012-2017

DTC Troubleshooting: P281E

DTC P281E: Shift Solenoid Valve O/P (Pressure Control Solenoid "H") Control Circuit High

NOTE:

	Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information.
	This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
P281E Shift Solenoid Valve O/P (Pressure Control Solenoid "H") Control Circuit High

Problem verification:

Problem verification

?1.	Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

?2.	Clear the DTC with the HDS.

?3.	Select the Shift Solenoid Valve O/P Test in the Miscellaneous Test Menu, and check that the shift solenoid valve O/P operates with the HDS.

?4.

Check for Pending or Confirmed DTCs with the HDS.

DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
P281E Shift Solenoid Valve O/P (Pressure Control Solenoid "H") Control Circuit High

Is DTC P281E indicated?


	YES

The failure is duplicated. Go to step 2.


	NO

Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals between the shift solenoid valve O/P and the PCM.?

Shift solenoid valve O/P check:

Shift solenoid valve O/P check

?1.	Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?2.	Jump the SCS line with the HDS.

?3.

Disconnect the following connector.

PCM connector C (51P)

?4.

Measure the resistance between test points 1 and 2.

Test condition	Ignition switch LOCK (0), or OFF mode
	PCM connector C (51P): disconnected
Test circuit	SOL C
Test point 1	PCM connector C (51P) No. 17 (BLU/BLK)
Test point 2	Body ground

Is there 10.6?13.5 ??


	YES

The shift solenoid valve O/P is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM, then do the repair verification.


	NO

Go to step 3.

Open wire check (SOL C line):

Open wire check (SOL C line)

?1.

Disconnect the following connector.

Solenoid wire harness A 8P connector

?2.

Check for continuity between test points 1 and 2.

Test condition	Ignition switch LOCK (0), or OFF mode
	Solenoid wire harness A 8P connector: disconnected
	PCM connector C (51P): disconnected
Test circuit	SOL C
Test point 1	Solenoid wire harness A 8P connector No. 2 (BLU/BLK)
Test point 2	PCM connector C (51P) No. 17 (BLU/BLK)

Is there continuity?


	YES

Go to step 4.


	NO

Repair an open in the SOL C wire between the solenoid wire harness A 8P connector and the PCM, then do the repair verification.

Shift solenoid valve O/P internal resistance check:

Shift solenoid valve O/P internal resistance check

?1.

Disconnect the following connector.

Shift solenoid valve O/P 2P connector

?2.

Measure the resistance between test points 1 and 2.

Test condition	Ignition switch LOCK (0), or OFF mode
	Shift solenoid valve O/P 2P connector: disconnected
Test circuit	SHC+
Test point 1	Shift solenoid valve O/P 2P connector No. 1
Test point 2	Body ground

Is there 10.6?13.5 ??


	YES

Go to step 5.


	NO

Replace the shift solenoid valve O/P, then do the repair verification.

Open wire check (SHC+ line in solenoid wire harness A):

Open wire check (SHC+ line in solenoid wire harness A)

?1.	Remove the lower valve body.

?2.	Remove the solenoid wire harness A 8P connector.

?3.

Check for continuity between test points 1 and 2.

Test condition	Lower valve body removed
	Shift solenoid valve O/P 2P connector: disconnected
	Solenoid wire harness A 8P connector: disconnected
Test circuit	SHC+
Test point 1	Shift solenoid valve O/P 2P connector No. 1 (YEL)
Test point 2	Solenoid wire harness A 8P connector No. 2 (YEL)

Is there continuity?


	YES

Check for poor connections or loose terminals between the shift solenoid valve O/P and the PCM, then go to step 1 and recheck.


	NO

Repair an open in the SHC+ wire between the solenoid wire harness A 8P connector and the shift solenoid valve O/P, then do the repair verification.

Repair verification (OBD STATUS check):

?1.	Reconnect all connectors.

?2.	Exit the SCS mode with the HDS.

?3.	Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

?4.	Clear the DTC with the HDS.

?5.	Start the engine in P, and wait for at least 1 second.

?6.

Monitor the OBD STATUS for P281E in the DTCs MENU with the HDS.

DTC Description	OBD Status
P281E Shift Solenoid Valve O/P (Pressure Control Solenoid "H") Control Circuit High

Does the HDS indicate PASSED, FAILED, or NOT COMPLETED?


	PASSED

Troubleshooting is complete. If the PCM was substituted, replace the original PCM. Check for other DTC after this troubleshooting. If any other Pending or Confirmed DTCs were indicated, go to the indicated DTC's troubleshooting.?


	FAILED

Troubleshooting is incomplete. Check for poor connections or loose terminals between the shift solenoid valve O/P and the PCM, then go to step 1 and recheck. If the PCM was updated, substitute a known-good PCM, and check the OBD STATUS again.


	NOT COMPLETED

Repair verification is incomplete. Meet the test condition, and check the OBD STATUS again.