DTC P2720: Problem in A/T Clutch Pressure Control Solenoid Valve D Circuit

WARNING: This page is about a different variant/trim than selected.

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).
This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
If DTC P2720 is stored in the PCM, the transmission does not shift to 2nd or 5th gear because of the fail-safe function.

Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
Clear the DTC with the HDS.
Check for Pending or Confirmed DTCs with the HDS.
Is DTC P2720 indicated?

YES - Go to step 4.

NO - Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between A/T clutch pressure control solenoid valve D and the PCM.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
Check for a blown No. 10 (10 A) fuse in the driver's under-dash fuse/relay box.
Is the No. 10 (10 A) fuse OK?

YES - Go to step 6.

NO - Repair a short to body ground in the wire between PCM connector terminal A1 and the driver's under-dash fuse/relay box.
Jump the SCS line with the HDS.
Disconnect PCM connectors A (49P).
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
Measure the voltage between PCM connector terminals A1 and body ground.

Fig 1: Measuring Voltage Between PCM Connector Terminals A1 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES - Go to step 10.

NO - Repair an open in the wire between PCM connector terminal A1 and the driver's under-dash fuse/relay box.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
Jump the SCS line with the HDS.
Disconnect PCM connector B (49P).
Check for continuity between PCM connector terminal B43 and body ground.

Fig 2: Checking Continuity Between PCM Connector Terminal B43 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 14.

NO - Go to step 16.
Disconnect the A/T clutch pressure control solenoid valve D connector.
Check for continuity between A/T clutch pressure control solenoid valve D connector terminal No. 1 and body ground.

Fig 3: Checking Continuity Between A/T Clutch Pressure Control Solenoid Valve D Connector Terminal No. 1 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Repair a short to body ground in the wire between PCM connector terminal B43 and A/T clutch pressure control solenoid valve D.

NO - Faulty A/T clutch pressure control solenoid valve D. Replace the secondary valve body (A/T clutch pressure control solenoid valve D) (see SECONDARY VALVE BODY REPLACEMENT ).
Disconnect the A/T clutch pressure control solenoid valve D connector.
Check for continuity between PCM connector terminal B43 and A/T clutch pressure control solenoid valve D connector terminal No. 1.

Fig 4: Checking Continuity Between PCM Connector And A/T Clutch Pressure Control Solenoid Valve D Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 18.

NO - Repair an open in the wire between A/T clutch pressure control solenoid valve D connector terminal No. 1 and PCM connector terminal B43.
Check for continuity between A/T clutch pressure control solenoid valve D connector terminal No. 2 and body ground.

Fig 5: Checking Continuity Between A/T Clutch Pressure Control Solenoid Valve D Connector Terminal No. 2 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 19.

NO - Repair an open in the wire between the A/T clutch pressure control solenoid valve D connector and body ground (G101) (see CONNECTOR TO FUSE/RELAY BOX INDEX ), or repair poor body ground (G101).
Measure the resistance between A/T clutch pressure control solenoid valve D connector terminals No. 1 and No. 2.

Fig 6: Measuring Resistance Between A/T Clutch Pressure Control Solenoid Valve D Connector Terminals No. 1 And No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there 4.7 - 5.9 Ω?

YES - Replace the PCM (see ECM/PCM REPLACEMENT ).

NO - Faulty A/T clutch pressure control solenoid valve D. Replace the secondary valve body (A/T clutch pressure control solenoid valve D) (see SECONDARY VALVE BODY REPLACEMENT ).