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Home >> Suzuki >> 2002 >> Grand Vitara Limited, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0451: EVAP Circuit, Pressure Sensor Range/Performance Problem >> DTC Confirmation Test
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DTC Confirmation Test

  1. Ensure intake air temperature is 6.8-158°F (-14-70°C), vehicle is at an altitude of 9150 feet or below, and barometric pressure is 74 kPa or more. Turn ignition off, connect scan tool and turn ignition on. Clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM.
  2. Start engine and allow it to reach normal operating temperature. Drive vehicle at speeds of 25 MPH for 1 second. Stop vehicle. Check for DTC P0451. See RETRIEVING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM.
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