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Home >> Kia >> 2016 >> Cadenza Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 3) >> DTC P0171: System Too Lean (Bank 1) >> Component Inspection

Component Inspection

■ Check PCV 

  1. IG "OFF". Remove PCV valve from rocker cover.
  2. Insert a thin tool into the PCV valve from the threaded side and verify that the plunger is moving.
  3. Is the PCV valve moving correctly?

    YES 

    • Go to "Check injector" as follows

    NO 

■ Check injector for normal operation 

  1. Start engine.
  2. Check that RPM decrease when performing the injector's actuation test.
  3. Is there any cylinder with no change in RPM or only a small change in RPM?

    YES 

    NO 

    • Clear DTC and Test-drive under enable conditions. After the test, if this DTC is set, go to "SYSTEM INSPECTION " procedure. If not, troubleshooting is completed.