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Adjusting Sensor Connectors

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When a sensor code is flagged, it’s possible that the problem is due to a poor harness connection. In an auto environment, some of the most common points of electrical system failure can be traced to a degraded electrical connection. Sometimes unplugging and replugging a sensor connector can improve a connection that may have vibrated loose or become slightly corroded. Ground wires running to sensors may also become resistive, so should be checked for good connection and solid voltage grounding.