P0770 Shift Solenoid E Malfunction

P0770 points to shift solenoid E malfunction. The transmission controller detected a problem with the solenoid used for another gear or hydraulic control path.

Code details

Generic OBD-II · P0

System: Transmission
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace the transmission from P0770 alone; enhanced data and circuit checks are needed first.

Symptoms of P0770

Harsh, delayed, or slipping shifts, or being stuck in one gear.
Check-engine light, sometimes with limp-home mode.
Flaring RPM or a shudder under load.

Common causes of P0770

Low or degraded transmission fluid.
A failing speed sensor, shift solenoid, or pressure-control circuit.
Wiring, connector, or internal hydraulic/mechanical faults.

Useful checks before replacing parts

Review solenoid E command, commanded gear, actual gear, input speed, output speed, and related ratio or shift codes.
Check fluid level and condition, solenoid E wiring, internal harness, case connector, and connector sealing.
Determine whether the code is an electrical fault at key-on or a performance fault during a shift event.

Related OBD-II codes

These nearby transmission entries can help compare wording and pin down the fault area.