P0998

Shift Solenoid F Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Difficulty shifting gears
The car goes into emergency gearbox mode
Check Engine light comes on
Reduced vehicle dynamics
Possible jerking when changing gears

Causes

Shift Solenoid F Malfunction
Open or short circuit in control circuit
Poor contact in solenoid connectors
Transmission control module (TCM) malfunction
Wiring Harness Problems

How to Fix

Check the condition of the wiring and connectors in the solenoid F circuit
Test solenoid F resistance
Check control circuit voltage
If necessary, replace solenoid F
Reflash or replace the transmission control unit if a malfunction is detected

Related codes

P0997 P0999 P0758