P0778

Pressure Control Solenoid B Electrical

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Hard gear shifts
Delays when shifting gears
Automatic transmission goes into emergency mode
Increased engine speed when switching
Check Engine Light Illuminates

Causes

Pressure Control Solenoid B Malfunction
Open or short circuit in solenoid circuit
Poor contact in solenoid connector
Transmission control unit malfunction
Low or contaminated transmission fluid

How to Fix

Check the level and condition of the transmission fluid
Check pressure control solenoid B resistance
Check the integrity of the solenoid circuit and connectors
Replace faulty solenoid if necessary
Clean or replace the hydraulic unit if dirty

Related codes

P0776 P0777 P0779