Intermittent Malfunctions

There are instances when the MIL indicates that an intermittent fault DTC has cleared. In such instances, good parts are sometimes unnecessarily replaced. Follow the instructions below when using the Diagnostic Tables in order to avoid this problem.

If a malfunction is not an intermittent fault, verify that the sensor, the wires, and the connections are in good condition.

If a malfunction cannot be identified, but the MIL indicates a DTC:
^ Diagnose the malfunction by using the appropriate DTC chart. If the sensor, the wires, and the electrical connections are all in good condition, erase the DTC from the PCM memory. Conduct a test, and determine what DTCs are present when the MIL illuminates. The malfunction is present only if the MIL indicates a DTC again.
^ The first instance of Type B DTCs are stored in the Test Failed Since Code Cleared display, but not in the History display. When the MIL illuminates and a DTC is stored in the History display, a current fault is indicated.