DTC P0116: Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Problem: Condition
WARNING: This page is about a different car, the 2002 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when Engine Control Module (ECM) detects Engine Coolant Temperature (ECT) variation is less than specified value. ECT fails to reach predetermined level after vehicle has been running for a predetermined time. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles. Possible causes are:
- ECM malfunction.
- ECT sensor malfunction.
- ECT sensor circuit malfunction.
- Thermostat malfunction.