Powertrain, generic · Fuel and air metering

P017F EVAP System Leak Detection Pump Module Air Filter Restricted

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

Leak detection pump modules in the evaporative emission system (for example Bosch's DM-TL, used by VW, BMW, Porsche, Volvo, Mini, Land Rover and Kia/Hyundai) draw fresh air through their own filter, often mounted separately via a hose; at rest the charcoal canister is also vented through it. P017F means this filter is restricted – by dust, mud or water when fitted near a wheel arch. The reference measurement of the pump and the venting are then distorted, and the tank can pull a vacuum. A GM patent describes detection via the pressure difference across the filter during purge (above about 8 inH2O for 10–20 s). No manufacturer document using exactly this code was found; the description rests on CARB's requirement to monitor evaporative system components and these component sources.

Likely causes

Leak detection pump filter dirty or blocked
Moisture or ice in filter or hose
Hose between filter and pump kinked or blocked
Pump module faulty (wrong reference)

Symptoms

  • Check engine light on
  • EVAP readiness not set
  • Possibly refuelling difficulties (venting)
  • Usually no noticeable change in driving

Repair estimate

DifficultyEasyDIY possible
Parts and labour€20–250
Time0.3–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

evap leak detection pumpevap leak detection pump filterevap canister

Related codes

P043EP043FP2400P2401P0455P0456

References: law.cornell.edu, vehicleservicepros.com, patents.google.com.