P1790 Toyota Code - ST Solenoid Valve Circuit Malfunction
Quick Answer
Shift solenoid valve ST is switched ON-OFF by a signal from ECM so that let in or out timing of 2nd brake is adjusted by operating orifice control valve. Common causes include Open or short in shift solenoid valve ST circuit, Shift solenoid valve ST. 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
- P1790 Toyota indicates ST Solenoid Valve Circuit Malfunction.
- Common causes
- Common causes include Open or short in shift solenoid valve ST circuit, Shift solenoid valve ST.
- 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 P1790 Toyota Description
What are the Possible Causes of the DTC P1790 Toyota?
- Open or short in shift solenoid valve ST circuit
- Shift solenoid valve ST
How to Fix the DTC P1790 Toyota?
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 P1790 Toyota 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.
Need more information about the P1790 Toyota code?
Need more information on how to fix the P1790 Toyota code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1790 Toyota code diagnosed by a professional: Find a repair shop in your area
Information for Specific Toyota Models
- P1790 2000 Toyota Echo — ST Solenoid Valve Circuit Malfunction
- P1790 2001 Toyota Echo — ST Solenoid Valve Circuit Malfunction
- P1790 2002 Toyota Echo — ST Solenoid Valve Circuit Malfunction
Frequently Asked Questions about P1790 Toyota Code
No Frequently Asked Questions about P1790 Toyota Code found.
Discuss the causes and fixes for P1790 Toyota OBDII Code
-
Tengo un problema con mi toyota funcargo me aparece el código p1790 y no se como reparar
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
