P078B

Shift Timing Solenoid B Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–67 (est.)

Symptoms

Incorrect gear shifting
Delays when shifting gears
Jerks when switching
Switching to emergency mode of the gearbox
Increased fuel consumption

Causes

Shift Solenoid B Malfunction
Solenoid circuit problems
Low or contaminated transmission fluid
Mechanical problems in the gearbox
Transmission control module (TCM) malfunction

How to Fix

Check the level and condition of the transmission fluid
Diagnose the electrical circuit of the solenoid
Check resistance and operation of solenoid B
Replace solenoid B if necessary
Reset transmission adaptations after repair

Related codes

P078A P078C P078D