DTC P0116: Engine Coolant Temperature (ECT) Sensor Circuit, Range/Performance Problem: Condition

DTC is set if difference between maximum and minimum input voltage from ECT is less than 5.6°C. Difference is measured after allowing vehicle to be off for at least 6 hours and starting vehicle and allowing it to idle for 5 minutes. This is a continuous monitor. MIL is illuminated when Powertrain Control Module (PCM) detects malfunction during 2 consecutive drive cycles. Possible causes are:

• ECT sensor malfunction.
• Poor ECT sensor or PCM connector connection.
• PCM malfunction.