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No. 10: Replacing evaporative emissions (EVAP) purge solenoid
Average repair cost: $184.66
Jumping from No. 15 in CarMD's study last year to No. 10 this year, this represents 2.27% of all repairs.
Like the purge control valve (at No. 9), the solenoid is part of the car's EVAP system, controlling how much fuel vapor escapes into the atmosphere. It is controlled by the engine control module or powertrain control module and typically needs replacing when it starts to fail.
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