OBD-II fault code

P0773: Shift Solenoid E Electrical

What it means

Shift Solenoid "E" Electrical: an electrical fault is present. Shift solenoids route transmission hydraulic pressure to engage the gears; faults cause harsh, delayed, or missed shifts.

At a glance

  • Usually lights the check-engine light
  • The engine or gearbox may go into limp mode

How it works

Shift solenoid E is an electrically controlled valve that routes transmission fluid for a particular shift function. The transmission control module sets this code when it detects an electrical fault in the E control circuit, which can prevent the intended shift and may trigger a protective operating mode.

Common causes

Most likely first.

  1. Open or shorted winding
  2. Wiring or connector fault

Symptoms

  • Check engine or transmission warning light on
  • Harsh, delayed, or missing shifts
  • Possible limp mode (locked in one gear)
  • Slipping or shuddering during gear changes

How to diagnose it

  1. Save freeze-frame data and check for related transmission or system voltage codes that could indicate a shared power or ground problem.
  2. With the ignition off, inspect the transmission connector and wiring to solenoid E for breaks, chafing, corrosion, fluid intrusion, or loose terminals.
  3. Check the relevant fuse and circuit power and ground using the vehicle’s wiring information.
  4. Measure solenoid E coil continuity and check its circuit for shorts or opens, comparing readings with the manufacturer’s specification.
  5. If the circuit and solenoid test correctly, check the control module output and terminals using the manufacturer’s diagnostic procedure.

Common fixes

  • Reconnect, clean, or repair a loose or corroded transmission connector.
  • Repair an open, shorted, or chafed wire in the solenoid E circuit.
  • Replace shift solenoid E if its coil fails the specified electrical test.
  • Repair a confirmed power or ground fault, or address a control module fault verified by testing.

Can I keep driving?

If the transmission is in limp mode or shifts harshly, avoid normal traffic and arrange a safe route to repair; do not tow or accelerate hard. Stop driving if the vehicle slips, loses drive, or cannot maintain predictable gear selection.

A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together

This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.

Codes for the same component

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