DTC P1431: Vacuum Sensor Circuit Range/Performance: Notes

WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .

NOTE: If DTCs P1430, P1431, P0110, P0115, P0120 and P0121 are output simultaneously, the E2 sensor ground circuit at terminal No. 18 (Brown wire) at Engine Control Module (ECM) electrical connector E8 may be open. See WIRING DIAGRAMS article. For ECM electrical connector terminal identification, see Figure. It may be necessary to check Brown wire between splice I7 and terminal No. 18 at ECM electrical connector E8. Splice I7 is located behind passenger's side of instrument panel. See Figure.