Shift Solenoid E Electrical
P0773 indicates a malfunction with Shift Solenoid E, which controls hydraulic pressure distribution in the automatic transmission. This electrical fault prevents the transmission from shifting properly, affecting vehicle drivability and fuel economy.
What You Might Notice
- Transmission slipping or delayed gear engagement
- Transmission overheating
- Vehicle stuck in one gear or limp mode
- Decreased fuel economy
- Check Engine Light illuminated
Most Common Causes
- 1
Faulty Shift Solenoid E
The solenoid coil has failed electrically or the plunger is stuck, preventing proper valve operation and hydraulic control.
- 2
Dirty or contaminated transmission fluid
Degraded fluid causes solenoid sticking and reduces hydraulic pressure needed for proper shifting.
- 3
Corroded wiring or damaged connector
Poor electrical connection to the solenoid prevents proper signal transmission from the PCM.
- 4
Clogged transmission filter or restricted passages
Blockage reduces hydraulic flow and pressure to the solenoid valve body, affecting shift control.
How to Diagnose It
- 1
Check Faulty Shift Solenoid E — The solenoid coil has failed electrically or the plunger is stuck, preventing proper valve operation and hydraulic control.
- 2
Check Dirty or contaminated transmission fluid — Degraded fluid causes solenoid sticking and reduces hydraulic pressure needed for proper shifting.
- 3
Check Corroded wiring or damaged connector — Poor electrical connection to the solenoid prevents proper signal transmission from the PCM.
- 4
Check Clogged transmission filter or restricted passages — Blockage reduces hydraulic flow and pressure to the solenoid valve body, affecting shift control.
How to Fix It
- 1
Replace Shift Solenoid E
Remove the transmission pan, locate Solenoid E, disconnect the electrical connector, and install a new solenoid. Refill transmission fluid to proper level.
- 2
Change transmission fluid and filter
Drain old fluid, replace the transmission filter, and refill with manufacturer-specified transmission fluid to restore hydraulic performance.
- 3
Inspect and repair wiring and connector
Check the solenoid connector and wiring harness for corrosion, damage, or loose connections. Clean contacts or replace corroded wiring as needed.
- 4
Inspect valve body and hydraulic passages
If solenoid replacement doesn't resolve the code, the transmission may require professional valve body cleaning or replacement to clear restricted passages.
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