LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2002 >> Prius >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics >> Diagnostic Tests >> DTC P1431: Vacuum Sensor Circuit Range/Performance >> Circuit Description
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

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:

scientia non olet · About LEMON Manuals