What happens to the p0117 code when coolant is warm?
As the temperature of the coolant changes, the resistance of the sensor changes. When the engine is cold, the resistance is high. When the engine is warm, the resistance is low. If the PCM detects a signal voltage lower than the normal operating range of the sensor then P0117 code will set.
What is the purpose of the p0117 ECT code?
P0117 ECT (Engine Coolant Temperature) Sensor Circuit Low Voltage: The purpose of this code is as a diagnostic check for a resistance corresponding to a very high engine coolant temperature. The check is enabled whenever the engine computer ECM (Engine Control Module) or PCM (Powertrain Control Module) is powered.
What are the codes for check engine light codes?
P0179 Fuel Composition Sensor Circuit High Input P0180 Fuel Temperature Sensor A Circuit Malfunction P0181 Fuel Temperature Sensor A Circuit Range/Performance P0182 Fuel Temperature Sensor A Circuit Low Input P0183 Fuel Temperature Sensor A Circuit High Input P0184 Fuel Temperature Sensor A Circuit Intermittent
What are the most common failed emission test codes?
Small leaks easier to find, because to create a vapor-like smoke the machine heats the mineral oil, it may contain dye of UV leak detection. Cycle the purge solenoid and other EVAP self-test can be run using a professional level scan tool which have a bidirectional communication ability. 1. Low Fuel Pressure
As the temperature of the coolant changes, the resistance of the sensor changes. When the engine is cold, the resistance is high. When the engine is warm, the resistance is low. If the PCM detects a signal voltage lower than the normal operating range of the sensor then P0117 code will set.
What does the code p0117 mean on the ECM?
This data is sent to the ECM, which uses this data to regulate the air to fuel ratio, cooling fans, and ignition spark timing needed by the engine. Code P0117 is the result of the ECT sensor indicating a low voltage input from the coolant temperature circuit. (approximately less than .3V) What Are the Symptoms of Code P0117?
What causes the p0117 OBD-II trouble code?
Engine Coolant Temperature (ECT) sensor circuit low output problem P0117 is the OBD-II generic code that indicates the engine control module (ECM) has seen the ECT sensor output go less than 0.14 Volts or more than 140°C (284°F). What causes the P0117 code?
What causes a p0117 ECT signal low input?
Potential causes of the P0117 code include: 1 Bad ECT sensor 2 Short to ground on ECT signal circuit 3 Faulty or damaged connectors 4 Wiring harness damaged 5 Loose terminals at ECT or PCM 6 POSSIBLY an overheated engine 7 Bad PCM More