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Home >> Chevrolet >> 2011 >> Volt >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.4L (LUU) - DTC P1400 Through DTC P2635 >> DTC P2450 >> Component Testing

Component Testing

  1. Command the EVAP leak detection pump switching valve with the scan tool.
    • The switching valve command status should change from Not Venting to Venting.
  2. If no change in status, inspect and repair any wiring or connection issues.
  3. If status changes, but no switch valve movement occurs, replace the Q63 EVAP leak detection pump assembly.
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