P1113 Fault Code

Audi – BANK 1, SENSOR 1 INTERNAL RESISTANCE TOO HIGH

For Audi, fault code P1113 is logged when the powertrain control module (PCM) has detected an issue with the heated oxygen sensor circuit. This happens when the internal resistance is too high for the sensor.

Oxygen sensors are installed in the exhaust system to monitor the air-fuel mixture found in the exhaust fumes. This information is fed to the PCM so that it can make minor adjustments to the air-fuel mixture in the engine by controlling the fuel injection system.

This is done in order to optimize performance, while simultaneously helping reduce the emissions of the vehicle to comply with emission regulations.

Most modern vehicles will have multiple heated oxygen sensors in place. Bank 1 refers to the side of the engine in which the first cylinder is located. Sensor 1 is the oxygen sensor that is found upstream of the catalytic converter.

One of the simplest causes of this issue is a faulty oxygen sensor that has an excessively high resistance.

This means replacing the sensor can be one of the easiest ways to solve this problem. Other causes will likely be found within the sensor circuit itself, causing a high resistance to be detected.

See generic codes: P0030

Chrysler – INTAKE AIR TEMPERATURE SENSOR SIGNAL (DYNAMIC CHAMBER) CIRCUIT

For Chrysler, fault code P1113 is logged when the powertrain control module (PCM) has detected an issue with the intake air temperature (IAT) sensor circuit.

The IAT sensor is responsible for relaying information about the IAT to the PCM. This is done to allow for adjustments to the air-fuel mixture for optimization.

Temperature is a fundamental aspect of thermodynamics. Variations in the temperature of the intake air mean that the thermodynamic properties of the air entering the combustion chamber change.

The IAT sensor provides valuable information to the ECM regarding the incoming air temperature. This allows the PCM to adjust the air-fuel mixture accordingly to allow for optimal efficiency and operation.

An issue with the IAT sensor will likely result in decreased performance of the vehicle.

The cause for this issue will likely be found within the IAT sensor circuit itself. This can include an open or short circuit condition.

See generic codes: P0110

Ford – IAT SENSOR OPEN/SHORT

Interestingly, fault code P1113 represents the same issue for Ford and Chrysler. For more information on the problem and similar generic fault codes, please see the above description for Chrysler.

See generic codes: P0110

Mercedes Benz – INTAKE AIR TEMPERATURE SENSOR SIGNAL (DYNAMIC CHAMBER) CIRCUIT

Interestingly, fault code P1113 represents the same issue for Mercedes and Chrysler. For more information on the problem and similar generic fault codes, please see the above description for Chrysler.

See generic codes: P0110

Volkswagen – OXYGEN SENSOR HEATER RESISTANCE TOO HIGH BANK 1 SENSOR 1

For Audi and Volkswagen, fault code P1113 represents the same issue. For more information on the problem and similar generic fault codes, please see the above description for Audi.

See generic codes: P0030