P0788 Toyota Code - Shift/Timing Solenoid High
Quick Answer
The P0788 diagnostic trouble code (DTC) for Toyota vehicles refers to a Shift/Timing Solenoid High. Common causes include Faulty shift/timing solenoid, Electrical issues such as a short or open circuit, Transmission control module malfunction. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0788 Toyota indicates Shift/Timing Solenoid High.
- Common causes
- Common causes include Faulty shift/timing solenoid, Electrical issues such as a short or open circuit, Transmission control module malfunction.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P0788 Toyota Description
The P0788 diagnostic trouble code (DTC) for Toyota vehicles refers to a Shift/Timing Solenoid High. This code indicates that the transmission is detecting a higher than normal voltage signal from the shift/timing solenoid, which is responsible for controlling the timing of gear shifts in the transmission. When this code is triggered, it can affect the vehicle's performance by causing erratic shifting behavior, delayed shifts, or even transmission slippage.
Common Causes of P0788 Toyota
- Faulty shift/timing solenoid
- Electrical issues such as a short or open circuit
- Transmission control module malfunction
- Low transmission fluid levels
- Wiring harness problems
Symptoms of P0788 Toyota
- Erratic shifting behavior
- Delayed or harsh gear shifts
- Transmission slipping
- Illuminated check engine light
- Decreased fuel efficiency
How to Fix P0788 Toyota
- Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific DTC and confirm the issue is related to the shift/timing solenoid.
- Inspect the shift/timing solenoid and its wiring harness for any visible damage or signs of wear. Replace the solenoid if necessary.
- Check the transmission fluid level and quality. Top off or replace the fluid as needed.
- Test the transmission control module for proper function and replace if faulty.
- Clear the DTC with the diagnostic scanner and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0788 Toyota
The typical repair costs for addressing a P0788 code on a Toyota vehicle can vary depending on the specific cause of the issue. In general, the cost of replacing a shift/timing solenoid can range from $150 to $300, including parts and labor. If additional repairs or component replacements are needed, the total cost may increase. It's important to factor in diagnostic time and labor rates at auto repair shops, as these can influence the final repair bill. Keep in mind that rates can vary based on location, vehicle make and model, and the expertise of the technicians performing the repairs.
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