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Home >> Lexus >> 1997 >> SC 400 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Circuit Tests >> DTC P1401 - Sub-Throttle Position (Sub-TP) Sensor Circuit Range/Performance Problem >> Notes

DTC P1401 - Sub-Throttle Position (Sub-TP) Sensor Circuit Range/Performance Problem: Notes

CAUTION: If ECM replacement is instructed in following testing, always ensure ECM harness connector and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction.