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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 39 (Engine Control System Diagnosis - 1.6L (2 Of 3) (Except HEV)) >> DTC P0272: Cylinder 4 Contribution/Balance >> Component Inspection

Component Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Check PCV
    1. IG "OFF" and remove PCV valve from rocker cover.
    2. Insert a thin stick into the PCV valve from the threaded side and verify that the plunger is moving.
    3. Is the PCV valve normally moving?

      YES 

      • Go to "Check injector for normal operation" as follows.

      NO 

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

      YES 

      • Clear DTC and Test-drive under enable conditions above-mentioned. After the test, If this DTC is set, go to "Inspection & Repair" procedure. If not, troubleshooting is completed.

      NO