P0788 Scion Code - Shift/Timing Solenoid High
Quick Answer
Shift solenoid valve ST is switched ON OFF by a signal from Engine Control Module (ECM) so that let in or out timing of 2nd brake is adjusted by operating orifice control valve. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shifting solenoid valve. 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 Scion indicates Shift/Timing Solenoid High.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shifting solenoid valve.
- 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.
Code P0788 Scion Description
What are the Possible Causes of the DTC P0788 Scion?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shifting solenoid valve
- Shifting solenoid valve harness is open or shorted
- Shifting solenoid valve circuit poor electrical connection
How to Fix the DTC P0788 Scion?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0788 Scion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0788 Scion Code
1. What does OBDII code P0788 mean for a Scion?
P0788 indicates an issue with the shift/timing solenoid, specifically a high electrical condition in the solenoid circuit.
2. What are the symptoms of code P0788 in a Scion?
Common symptoms include harsh or delayed shifting, transmission slipping, failure to shift gears properly, and the illumination of the check engine light.
3. What causes the P0788 code to trigger in a Scion?
Possible causes include a faulty shift/timing solenoid, damaged wiring or connectors in the solenoid circuit, low or dirty transmission fluid, or a malfunctioning transmission control module (TCM).
4. Can I drive my Scion with a P0788 code?
Driving with this code is not recommended, as it can lead to further transmission damage and unsafe driving conditions due to erratic gear shifting.
5. How do you diagnose a P0788 code in a Scion?
Diagnosis involves scanning for codes with an OBDII scanner, inspecting the wiring and connectors of the shift solenoid circuit, testing the solenoid for proper operation, and checking the transmission fluid condition.
6. How can a P0788 code be fixed in a Scion?
Repairs may include replacing the faulty shift/timing solenoid, repairing or replacing damaged wiring or connectors, performing a transmission fluid flush, or reprogramming or replacing the TCM.
7. How much does it cost to repair a P0788 code in a Scion?
Costs vary depending on the issue but can range from $150 to $400 for solenoid replacement and more if additional repairs or diagnostics are needed.
8. Can low transmission fluid cause a P0788 code in a Scion?
Yes, low or dirty transmission fluid can contribute to solenoid performance issues and trigger this code.
9. What tools are needed to troubleshoot a P0788 code in a Scion?
Basic tools include an OBDII scanner, a multimeter for testing electrical circuits, and potentially a transmission pressure tester.
10. Can a faulty TCM trigger the P0788 code in a Scion?
Yes, a malfunctioning transmission control module can cause improper solenoid operation and set this code.
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