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Non-Turbo (Calif. Models)

  1. Inspection is required when trouble code No. 27 exists. Clear trouble codes. See CLEARING TROUBLE CODES  under DIAGNOSIS & TESTING. Warm engine to normal operating temperature.
  2. Stop engine and turn ignition off. Repeat previous steps and note if trouble code No. 27 exists again. If trouble code exists again, check sub-oxygen sensor circuit for continuity, shorts or grounds. Replace sub-oxygen sensor if circuit is okay.
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