P0340 · blink 12 – CAMSHAFT POSITION SENSOR CIRCUIT MALFUNCTION

System: EFI 1ZZ-FE
Dashboard light: Malfunction indicator lamp (Check Engine)
Check-engine blink code: 12
Applies to: 1ZZ-FE 1.8 (PK Altis 2005-08 ZZE122; JDM ZZE122/124, Allex/Runx/Fielder 1.8)
Description: CAMSHAFT POSITION SENSOR CIRCUIT MALFUNCTION
Detection / symptoms: Detection: S No camshaft position sensor signal to engine ECU during cranking S Open in NE− circuit
Possible causes: Open or short in camshaft position sensor circuit; Camshaft position sensor; Starter; Engine ECU
What to check: Workshop check order (RM821E): CHECK CRANK POSITION SENSOR NO.1(CHECK RESISTANCE) -> CHECK HARNESS AND CONNECTOR(ENGINE ECU−CAMSHAFT POSITION -> INSPECT CAMSHAFT
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