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Home >> Chevrolet >> 2008 >> Optra LS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 2.0L (Diesel) >> Diagnostic Information and Procedures >> DTC P2226, P2228, or P2229 >> Circuit/System Testing

Circuit/System Testing

  1. Inspect the atmospheric vent on the ECM case for one of the following conditions:
    • Moisture in the vent inlet
    • Debris in the vent inlet
    • If a condition exists, attempt to clean or dry the atmospheric inlet.
  2. Engine running, observe the DTC information with a scan tool. DTCs P0069, P2226, P2228, or P2229 should not set.
    • If DTC P0069, P2226, P2228, or P2229 sets, replace the ECM.
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