Diagnostic Aids

• Check for a faulty electrical connection to the PCM.
• Check for the proper operation of the engine cooling system and verify the correct coolant level.
• Use the Temperature vs Resistance table in order to evaluate the possibility of a shifted ECT sensor. A shifted sensor could result in a DTC P0115. Refer to Temperature Versus Resistance .

An intermittent malfunction may be caused by a fault in the ECT sensor electrical circuit. Inspect the wiring harness and components for an intermittent condition. Refer to Intermittent Conditions .

Repair any electrical circuit faults that were found. Refer to Wiring Repairs .

If a DTC P0115 cannot be duplicated, the information included in the Freeze Frame data can be useful in determining vehicle operating conditions when the DTC was first set.