U029F KIA - Lost Communication with Evaporative Emission System Leak Detection Control Module

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Natural Vacuum Leak Detection (NVLD)
  • Natural Vacuum Leak Detection (NVLD) harness is open or shorted
  • Natural Vacuum Leak Detection (NVLD) circuit poor electrical connection
  • Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • U029f Kia Description

    The Evaporative system monitoring is made by using Natural Vacuum Leak Detection (NVLD).

    The leak detection is made by using two components.

    The "NVLD Sensor module" which incorporates the NVLD pressure switch and temperature sensor and the canister purge valve which is used as actuator to create vacuum in the tank when the engine is running.

    OBDII Code U029f Kia - Lost Communication with Evaporative Emission System Leak Detection Control Module - AutoCodes.com

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