Diagnostic Aids
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- If a short to a separate 5-volt source occurs, this DTC will set.
- A skewed sensor could result in poor driveability conditions. Refer to Temperature vs Resistance (ECT Sensor) or Temperature vs Resistance (IAT Sensor) or Temperature vs Resistance (IAT 2 Sensor) or Temperature vs Resistance (Fuel Temperature) .
- After starting the engine, the ECT should rise steadily, then stabilize when the thermostat opens.
- If the condition is suspected of being intermittent, refer to Testing for Intermittent Conditions and Poor Connections and Inducing Intermittent Fault Conditions .