P0500 · blink 42 – Vehicle speed sensor signal

System: Engine - speed sensor
Dashboard light: Check engine light (MIL)
Check-engine blink code: 42
Applies to: 1SZ-FE (by platform)
Description: Vehicle speed sensor signal
Possible causes: Trouble area: 1.Open or short in speed sensor circuit 2.Vehicle speed sensor 3.Combination meter 4.Engine computer (ECM)
What to check: Checking points: 1.Check speedometer works 2.Check sensor connector and wiring 3.Replace sensor
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