P0753 – Shift solenoid valve S1 electrical

System: AT
Dashboard light: Check engine light (MIL)
Check-engine blink code: —
Applies to: 1SZ-FE (by platform)
Description: Shift solenoid valve S1 electrical
Possible causes: Trouble area: 1.Open or short in solenoid S1 circuit 2.Shift solenoid valve S1
What to check: Checking points: 1.Check solenoid wiring and resistance
Confidence: medium (Toyota Echo 1999–2002 factory diagnostics, same XP10 platform; not confirmed on JDM 1SZ-FE)

From the factory service material. Clear the code and test-drive to confirm it returns. Search all fault codes · Common problems · Warning lights