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Home >> Toyota >> 2001 >> Prius >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics >> Diagnostic Tests >> DTC P1431: Vacuum Sensor Circuit Range/Performance >> Circuit Description

Circuit Description

Vacuum sensor provides input signals to ECM for controlling the Hydrocarbon Adsorber Catalyst (HCAC) system. DTC is set if a problem exists with the vacuum sensor. Possible causes are:

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