P0788: Shift Timing Solenoid A High
MediumPowertrainValve Timing
What does P0788 mean?
P0788 is a diagnostic trouble code indicating "Shift Timing Solenoid A High". This code relates to your vehicle's valve timing and should be diagnosed to determine the root cause. The severity level helps indicate how urgently this should be addressed.
Symptoms you may notice
- Check engine light (MIL) illuminated on dashboard
- Harsh or delayed gear shifts
- Transmission slipping
- Vehicle stuck in one gear (limp mode)
Estimated repair cost
Typical range in Australia (parts + labour)
$300 – $3000 AUD
Common causes
- Low or degraded transmission fluid
- Worn clutch packs or bands
- Faulty shift solenoid
- Wiring issue to the transmission control module
- Failing torque converter
What should you do?
Schedule a diagnostic appointment at your earliest convenience. The vehicle is generally safe to drive short distances, but the underlying issue should be addressed to prevent it from worsening.
Get a diagnosis for YOUR car
Code P0788 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.