P078A

Shift Timing Solenoid B

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–67 (est.)

Symptoms

Incorrect gear shifting
Jerks when switching
Switching delays
Switching to emergency mode
Check Engine light comes on

Causes

Shift Solenoid B Malfunction
Open or short circuit in solenoid circuit
Poor contact in connectors
Low transmission fluid level
Problems with the transmission control unit

How to Fix

Check the level and condition of the transmission fluid
Check the solenoid circuit for opens and short circuits.
Check solenoid resistance
Replace faulty solenoid if necessary
Reset the error and check the operation of the transmission

Related codes

P0785 P078B P079A