P0500 · blink 42 – VEHICLE SPEED SENSOR MALFUNCTION

System: EFI 1ZZ-FE
Dashboard light: Malfunction indicator lamp (Check Engine)
Check-engine blink code: 42
Applies to: 1ZZ-FE 1.8 (PK Altis 2005-08 ZZE122; JDM ZZE122/124, Allex/Runx/Fielder 1.8)
Description: VEHICLE SPEED SENSOR MALFUNCTION
Detection / symptoms: Detection: During vehicle is being driven, no vehicle speed sensor signal to engine ECU (2 trip detection logic)
Possible causes: Combination meter; Open or short in No.1 vehicle speed sensor circuit; No.1 vehicle speed sensor; Engine ECU
What to check: Workshop check order (RM821E): READ VALUE OF VEHICLE SPEED VALUE(SPEEDOMETER OPERATION) -> INSPECT ECU -> CHECK HARNESS AND CONNECTOR(COMBINATION METER−ENGINE ECU) (See -> CHECK COMBINATION METER ASSY(SPEEDMETER OPERATION)
Confidence: high (official Toyota RM821E)

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