DTC P0451, DTC P0452 &/Or DTC P0453: Notes

Code Definition

DTC P0451: EVAP System Pressure Sensor Range/Performance Problem
DTC P0452: EVAP Emission Control System Pressure Sensor Low Input
DTC P0453: EVAP Emission Control System Pressure Sensor High Input

NOTE: Before performing any diagnostic test, refer toWARNINGS, CAUTIONS and NOTES in DIAGNOSTIC TESTS .

NOTE: Testing individual components does not isolate shorts or opens. Perform all voltage tests using a Digital Volt-Ohmmeter Meter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use ohmmeter to isolate wiring harness shorts or opens.