One of the important factors that increase vehicle comfort is air conditioning. However, sometimes problems caused by air conditioning can lead to problems that have the effect of a cold shower, such as stopping or not starting the vehicle.
The car air conditioner cools, heats and cleans the vehicle. A special liquid (air conditioning gas) that boils at low temperatures is used in air conditioners.
The cooling or heating processes of the air conditioner are by increasing/decreasing the pressure of the refrigerant and passing from the gaseous state to the liquid state (condensation) or passing from the liquid state to the gaseous state.
The air conditioner cools the air it draws from inside the vehicle or from the external environment by passing it through the cooler and blowing it into the vehicle with the help of a fan.
If there is a problem with the car air conditioner, it means that there is a problem with at least one of the following things related to the air conditioner:
- Compressor
- Condenser
- Moisture Retaining Filter
- Expansion Valve
- Evaporator
- Air Conditioning Fan
- Air Conditioning Gas and Oil
- Sensors
A common reason for receiving the DF113 fault code in Renault vehicles is a problem with the sensor that detects the pressure of the air conditioning gas.
Possible problems with the vehicle with the Renault fault code DF113:
- The air conditioner does not work
- The vehicle does not work
What is the DF113 Renault fault code?
Brief description of the DF113 fault code:
The coolant is in the form of a pressure sensor circuit failure.
There is a sensor on the cars that measure the air conditioning pressure. If this sensor malfunctions or the electronic circuit is short-circuited, the air conditioner will not work because the ECU will not be able to connect to this sensor.
The fault code DF113 is also caused by the following problems:
- Contamination of the air conditioning pressure sensor socket, loosening of the cable
- Wear sensor cables, contact each other
- There is an electrical leak in the vehicle
- Intermittent or weak electricity from the battery
DF113 Renault fault code solution
The air conditioner pressure sensor is a sensor that operates with a voltage of 5v. In order for it to work properly, there must be no interruption or attenuation in the voltage of the electricity coming to this sensor, its electronic circuit must be intact.
The principle of operation of the air conditioning pressure sensor is as follows:
The air conditioning pressure sensor measures the pressure of the air conditioning gas and compares it to the reference value by generating a voltage according to the degree of pressure it measures. The sensor data is sent to the ECU.
If the ECU does not receive a signal from the air conditioner pressure sensor or detects an abnormal value, it will stop the operation of the air conditioner.
The failure of the air conditioning pressure sensor may also be caused by an electrical leak in the vehicle or battery connections. If such a situation exists, it is likely that the following sensors will also have problems:
- EGR valve position sensor
- Pedal sensor (a chronic problem in some Renault vehicles)
- Rail pressure sensor
- Refrigerant pressure sensor
- Intake manifold pressure sensor
- Intake manifold temperature sensor
- Heat sensor
The DF113 fault code may be a problem such as an inability to start the vehicle received. Because in order for the electronic systems and sensors in the vehicle to work, these systems must be properly powered.
If the vehicle is running and only the air conditioner is not working, the air conditioning pressure sensor and the connections of this sensor are checked first.
If the vehicle is not running, it is checked whether the air conditioning pressure sensor is working when it is deactivated.
If it is determined that there is no problem with the air conditioning pressure sensor and connections, the battery connections of the vehicle are checked to whether the battery charging system is intact.
It is checked whether there is an electronic component in the vehicle that constantly short-circuits. For this, the sensors listed above and their connections, circuits, and sockets are checked one by one.
Despite all this, if the problem has not been solved, it is thought that there may be a software problem in the ECU.