P0770 on Toyota Vitz (SCP10): Shift solenoid valve SL malfunction (lock-up)

Short answer: P0770 means “Shift solenoid valve SL malfunction (lock-up)”. The car’s computer has found a fault in the AT system and turns on the Check engine light (MIL). First check: check solenoid wiring and resistance.

Code

P0770

System

AT

Dashboard light

Check engine light (MIL)

Also sold as

Toyota Yaris, Toyota Echo (XP10)

Applies to

1SZ-FE (by platform)

Confidence

medium (Toyota Echo 1999–2002 factory diagnostics, same XP10 platform; not confirmed on JDM 1SZ-FE)

Source

carmanualsclub.com

Likely causes

1. Shift solenoid valve SL
2. Valve body
3. Torque converter

What to check, in order

1. Check solenoid wiring and resistance
2. Check ATF level and condition

Related on this car

• All fault codes for this car
• Warning lights
• Where the parts are (parts map)
• Common problems

Same code on other cars

• P0770 · Toyota Corolla (9th gen, E120)
• P0770 · Toyota Corolla (11th gen, E170)
• P0770 · Toyota Corolla (10th gen, E140)
• P0770 · Honda City (5th gen, GM2)
• P0770 · Honda Civic (10th gen, FC)
• P0770 · Suzuki Wagon R (Pakistan, K10B)
• P0770 on all cars compared

← P0758 P0773 →

Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.