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 does the code p0118 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 P0118 is the result of the ECT sensor indicating a high voltage input from the coolant temperature circuit. (typically over 4.7V)
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
What is the cause of ECT code p0117?
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 Is the Cause of Code P0117?
How does coolant temperature sensor work on Toyota p0118?
The powertrain control module (PCM) provides a 5 volt reference and a ground to the sensor. The PCM monitors voltage drop to determine coolant temperature. If the ECT reads less than freezing temp. when engine has been running for more than a few minutes, the PCM determines a circuit fault and sets this code.
What does it mean when a car has a code p0118?
Vehicle may start, but run very poorly, blowing black smoke, running very rough and misfiring A code P0118 may mean that one or more of the following has happened: A bad connection at the sensor An open in the ground circuit between the ECT sensor and the PCM A short in the voltage feed between the sensor and the PCM