Evaporative Pipe or Hose Damage

Some 2016-2017 Volt models built prior to October 3, 2016 that are equipped with the 1.5L engine (RPO L3A) may have an illuminated Check Engine light and Diagnostic Trouble Code (DTC) P0442 (EVAP System Small Leak Detected) may be set.


If these conditions are found, inspect the evaporative emissions purge solenoid pipe for damage from contacting the A/C evaporator core hose. (Fig. 14, #1; Fig. 15, #2; Fig. 16, #3)


Fig. 14


Fig. 15


Fig. 16



If there is damage to the evaporative emissions purge solenoid pipe (Fig. 17), replace the pipe. Position the new pipe to avoid contact with the A/C evaporative core hose.


Fig. 17


– Thanks to Raymond Haglund

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