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Home >> Chevrolet >> 2006 >> Optra5 LS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 2.0L (L34 GMDAT) - DTC P2122 To DTC P2282 >> DTC P2282 >> Circuit/System Testing

Circuit/System Testing

  1. Verify that none of the following conditions exist:
    • The air intake duct system for loose connecting clamps, cracks, or other damage.
    • A damaged throttle body blade or shaft
    • Splits, kinks, or improper connections at the vacuum hoses.
    • An EGR system leak
    • Faulty PCV system operation
    • Carbon deposits on the throttle blade. Refer to Throttle Body Service .
    • Vacuum leaks at the intake manifold, throttle body, and injector O-rings.
  2. If all conditions test normal, test the engine for proper camshaft timing. Refer to Timing Belt Replacement .
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