P0770

Shift Solenoid E Malfunction

Car Fault Codes Transmission

Severity Medium Do not ignore it; it may get worse and cost more.
Can you still drive? With care, short trips only
Who can fix it? Needs a workshop
Typical repair time 30 minutes – 5 hours
Typical cost SAR 100 to 2,500

What it means

The transmission control module (TCM) has detected a fault in shift solenoid E. This solenoid is found in transmissions with many gears and its role differs a lot between manufacturers; a fault can cause lost gears or limp mode.

Symptoms5

  • Some gears missing or abnormal shifts.
  • Transmission held in a fixed gear in limp mode.
  • Harsh or delayed shifts.
  • Higher fuel consumption on highways.
  • Check engine light on.

Possible causes6

  • Corroded or oil-soaked transmission connector.
  • Broken or chafed wire in the solenoid E circuit.
  • Electrical failure or sticking of shift solenoid E.
  • Low or dirty transmission fluid.
  • Damaged internal harness or valve body.
  • Transmission computer fault (less common).

How to diagnose5

  1. Read all codes; codes for other solenoids at the same time point to a shared cause.
  2. Check service information for the function of solenoid E and the gears linked to it in your transmission.
  3. Check fluid level and condition.
  4. Measure solenoid E resistance and compare it with the manufacturer specification, and inspect the connector and wiring.
  5. Watch commanded and actual gear on a scan tool, and command the solenoid if possible.

How to fix6

  1. Top up the fluid, or change it and the filter.
  2. Clean the connector and repair damaged wiring.
  3. Replace shift solenoid E or the solenoid pack if it is proven faulty.
  4. Repair the internal harness or valve body when needed.
  5. Reprogram or replace the computer after the above is ruled out.
  6. Clear the codes, then road test through all gears.

Repair cost

In Saudi riyals; the highlighted part is the expected range for this fault.

The cost is low when a connector, wire or fluid is the cause, and rises if a complete solenoid pack or a valve body is needed.

Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026

Frequently asked questions

What exactly does solenoid E do?

It differs between transmissions; it may help select upper gears or serve another function depending on the design, so check the service information for your vehicle.

Does this code mean the transmission needs a rebuild?

Not in most cases. The common cause is a connector, a wire or the solenoid itself; a rebuild is needed only if internal clutch damage is found.

This guide is for information only and does not replace an inspection by a qualified technician. If the fault involves brakes, steering, engine temperature, electrics or refrigerant, do not attempt the repair yourself.

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