DTC P2721 (16-20 6-Speed A/T)
DTC P2721 : A/T Clutch Pressure Control Solenoid Valve D High Input
NOTE:
- Before you troubleshoot, review the General Troubleshooting Information - Refer to: How to Troubleshoot the A/T System .
- This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
- If DTC P2721 is stored in the PCM, the transmission does not shift to 2nd or 5th gear because of the fail-safe function.
| DTC Description | Confirmed DTC | Pending DTC | Freeze Frame |
|---|---|---|---|
| P2721 A/T Clutch Pressure Control Solenoid Valve D High Input |
DTC (A/T)
- Problem verification
- 1. Turn the vehicle to the ON mode.
- 2. Clear the DTC with the HDS.
- 3. Check for Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC Freeze Frame P2721 A/T Clutch Pressure Control Solenoid Valve D High Input Is DTC P2721 indicated?
YES
The failure is duplicated. Go to step 2.
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. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.
- A/T clutch pressure control solenoid valve D check
- 1. Check the parameter (s) below with the HDS.
Signal Threshold Current conditions Values Unit Values Unit A/T C.P.C. Sol VLV. D Actual More than 0.035 A Do the current condition (s) match the threshold?
YES
A/T clutch pressure control solenoid valve D is OK. Go to step 3.
NO
Faulty A/T clutch pressure control solenoid valve D. Replace the secondary valve body (A/T clutch pressure control solenoid valve D) .
- Open wire check (GND1 line, GND2 LG line)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Jump the SCS line with the HDS, and wait more than 1 minute.
- 3. Disconnect the following connectors.
PCM connector B (51P) - 4. Check for continuity between these test points and body ground individually.
Test condition Vehicle OFF (LOCK) mode PCM connector B (51P): disconnected Connector Test circuit Terminal PCM connector B (51P) - Refer to:
PCM Connector for Inputs and Outputs (6-Speed A/T)GND1 No. 11 GND2 LG No. 20 Is there continuity?
YES
The GND1 and GND2 LG wires are OK. Replace the PCM - Refer to: PCM Removal and Installation (9-Speed A/T) (2019 2020 2021), or PCM Removal and Installation (6-Speed A/T), ('16-'18 9-Speed A/T) .
NO
Repair an open in the GND1 wire and/or the GND2 LG wire between the PCM and ground (G101) or repair poor ground (G101).