P0788

Shift Timing Solenoid A High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Hard or delayed gear shifts
Switching to emergency mode of the gearbox
Check Engine Light Illuminates
Decreased fuel efficiency
Dips during acceleration

Causes

Shift Solenoid A Malfunction
Open or short circuit in solenoid circuit
Poor contact in solenoid circuit connectors
Transmission control module (TCM) malfunction
Problems with power or grounding of the circuit

How to Fix

Check the solenoid resistance (compare with specifications)
Inspect the wiring harness and connectors for damage.
Check voltage and continuity of solenoid control circuit
If necessary, replace the faulty solenoid
Scan TCM for additional errors

Related codes

P0785 P0786 P0787 P0789