P0756

DTC P0756

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0756

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Shift Solenoid (SS) 2 Valve Performance - Stuck Off

Circuit/System Description

The shift solenoid valve 2 is part of the control solenoid valve assembly and is not serviced separately. The shift solenoid valve 2 is a normally closed solenoid valve and controls fluid to the hybrid low, 1-2 clutch boost valve assembly and related clutches. During this diagnostic test, intrusive actions are taken by the transmission control module to test the shift solenoid valve 2 to see if the valve is stuck OFF when in dual motor or dual motor and ICE modes.

Conditions for Running the DTC

* Shifting to dual motor or dual motor and ICE.

* Line pressure is greater than 325 kpa.

Conditions for Setting the DTC

The transmission control module detects shift solenoid valve 2 is OFF when commanded ON.

Action Taken When the DTC Sets

P0756 is a Type A DTC.

Conditions for Clearing the DTC

P0756 is a Type A DTC.

Reference Information

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Circuit/System Verification

1. Verify that P0966, P0967, P0969, P0970, P0971, P0973, P0974, P0976, P0977, P2720, P2721, P2728, P2729, or P2730 is not set.

• If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.

2. Perform the Transmission Fluid Level and Condition Check Testing and Inspection.

3. Perform the Line Pressure Check Line Pressure Check.

4. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection Control Solenoid Valve and Transmission Control Module Assembly Inspection.

5. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test.

• If the shift solenoid 2 is found to be leaking or stuck OFF, replace the Q8 control solenoid valve assembly.

• If the Q8 control solenoid valve assembly tests normal, inspect the valve body and hydraulic circuits for a leak or a stuck valve. Refer to Control Valve Body Diagnostic Inspection Control Valve Body Diagnostic Inspection.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Control Valve Body Replacement Control Valve Body Replacement for control valve body replacement.

* Control Module References Programming and Relearning for Control Solenoid Valve Assembly and Transmission Control Module Assembly replacement, programming, and setup.

* Perform the Reset Transmission Adapts Programming and Relearning following all transmission related repairs.