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Home >> Chevrolet >> 2006 >> Optra5 LS, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - 1.8L (L79) - DTC P0016 To DTC P0420 >> DTC P0337 >> Circuit/System Verification
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Circuit/System Verification

  1. Attempt to start the engine. Observe the DTC information with a scan tool. DTC P0337 should not set.
  2. Move related harnesses/connectors of the CKP sensor and verify the engine does not stumble, stall, or change engine speed.
  3. If the vehicle passes the Circuit/System Verification Test, then operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records Data List.
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