DTC Troubleshooting

DTC Troubleshooting: P2821 (69-4)

DTC P2821:

Line Pressure Solenoid Valve A Stuck ON

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information How to Troubleshoot the A/T System.
- If DTC P2821 is stored in the PCM, engine torque is restricted because of the fail-safe function.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).

2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.

3. Drain the ATF ATF Replacement through a strainer. Inspect the strainer for metal debris or excessive clutch material.

Does the strainer have metal debris or excessive clutch material?

YES -

Replace the transmission.

NO -

Replace the ATF ATF Replacement, then go to step 4.

4. With SH-AWD: Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely.

Without SH-AWD: Block the rear wheels, and raise the front of the vehicle, make sure it is securely supported, and allow the front wheels to rotate freely, or raise the vehicle on a lift.

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

6. Clear the DTC with the HDS.

7. Start the engine. With the brake pedal pressed, shift to D, then release the brake pedal.

8. Monitoring the APP Sensor (%) with the HDS in the A/T Data List, press (2 % opened) and release (0 % opened) the accelerator pedal every 2 seconds. Then check the Line Pressure Sol VLV. A signal and the Line Pressure Pressure Switch signal with the HDS in the A/T Data List.

Is the Line Pressure Pressure Switch ON when Line Pressure Sol VLV. A is ON, and OFF when Line Pressure Sol VLV. A is OFF?

YES -

Intermittent failure, the system is OK at this time.

NO -

Faulty line pressure solenoid valve A. Replace the secondary valve body (line pressure solenoid valve A) Secondary Valve Body Replacement (A/T).