P0773 – OBD-II DTC

OBD-II DTC P0773 – Shift Solenoid D Intermittent

DTC P0773 meaning

DTC P0773 refers to a diagnostic trouble code indicating an intermittent issue with the Shift Solenoid D in an automatic transmission. The shift solenoid is responsible for controlling the flow of transmission fluid, which is essential for shifting gears smoothly. When the powertrain control module (PCM) detects that the solenoid is not functioning correctly, it triggers this code.

DTC P0773 symptoms

Common symptoms associated with DTC P0773 may include:

• Delayed or harsh shifting between gears
• Slipping transmission
• Check Engine Light illuminated
• Unusual noises during gear shifts
• Inability to shift into certain gears

DTC P0773 causes

Several factors can lead to the occurrence of DTC P0773, including:

• Faulty shift solenoid D
• Wiring issues or poor connections in the solenoid circuit
• Low transmission fluid levels or contamination
• Faulty PCM or software issues
• Mechanical problems within the transmission

DTC P0773 seriousness

DTC P0773 can be serious as it may lead to transmission performance issues. If left unaddressed, it can result in further damage to the transmission, potentially leading to costly repairs. It is advisable to diagnose and resolve the issue promptly to maintain vehicle safety and performance.

How to diagnose DTC P0773

To diagnose DTC P0773, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the P0773 code.
2. Check for any additional trouble codes that may provide more context.
3. Inspect the transmission fluid level and condition.
4. Examine the wiring and connectors related to the shift solenoid D for damage or corrosion.
5. Test the shift solenoid D for proper operation using a multimeter.
6. Check the PCM for any software updates or faults.

How to fix DTC P0773 step-by-step instructions

To fix DTC P0773, follow these steps:

1. Ensure the vehicle is safely lifted and supported if necessary.
2. Check and top off the transmission fluid if low or contaminated.
3. Inspect and repair any damaged wiring or connectors related to the shift solenoid D.
4. Replace the shift solenoid D if it is found to be faulty.
5. Clear the DTC using an OBD-II scanner.
6. Test drive the vehicle to ensure the issue is resolved and the code does not return.

How to erase DTC P0773

To erase DTC P0773, 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. Navigate to the “Erase Codes” or “Clear Codes” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the vehicle to check if the code reappears.

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