P0774 – OBD-II DTC

OBD-II DTC P0774 – Shift Solenoid E Malfunction

DTC P0774 meaning

DTC P0774 refers to a malfunction in the Shift Solenoid E of the transmission system. The shift solenoid is responsible for controlling the flow of transmission fluid, which is essential for shifting gears smoothly. When the Engine Control Module (ECM) detects an issue with this solenoid, it triggers the P0774 code, indicating that the solenoid is not functioning as intended.

DTC P0774 symptoms

Common symptoms associated with DTC P0774 may include:

• Delayed or harsh shifting between gears
• Transmission slipping or failing to engage
• Increased engine RPM without corresponding vehicle speed
• Check Engine Light illuminated on the dashboard
• Unusual noises from the transmission

DTC P0774 causes

Several factors can lead to the occurrence of DTC P0774, including:

• Faulty Shift Solenoid E
• Wiring issues or poor electrical connections
• Low transmission fluid levels or contamination
• Faulty Transmission Control Module (TCM)
• Mechanical issues within the transmission

DTC P0774 seriousness

DTC P0774 is considered a serious issue as it can affect the vehicle’s drivability and safety. If left unaddressed, it may lead to further transmission damage, increased repair costs, and potential breakdowns. It is advisable to diagnose and repair the issue promptly to ensure safe operation of the vehicle.

How to diagnose DTC P0774

To diagnose DTC P0774, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the P0774 code.
2. Inspect the transmission fluid level and condition.
3. Check the wiring and connectors related to Shift Solenoid E for damage or corrosion.
4. Test the Shift Solenoid E for proper operation using a multimeter.
5. Examine the Transmission Control Module (TCM) for faults.
6. Perform a road test to observe shifting behavior and confirm symptoms.

How to fix DTC P0774 step-by-step instructions

To fix DTC P0774, follow these steps:

1. Address any low or contaminated transmission fluid by replacing it and ensuring proper levels.
2. Repair or replace any damaged wiring or connectors related to the Shift Solenoid E.
3. If the Shift Solenoid E is faulty, replace it with a new one.
4. Check and, if necessary, replace the Transmission Control Module (TCM).
5. Clear the DTC using an OBD-II scanner and perform a test drive to ensure the issue is resolved.

How to erase DTC P0774

To erase DTC P0774, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Access the diagnostic menu on the scanner and locate the option to clear or erase codes.
4. Select the option to erase the DTCs.
5. Disconnect the scanner and start the vehicle to verify that the code does not reappear.

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