RAM Code P242D is a diagnostic trouble code that indicates an issue with the Exhaust Gas Temperature Sensor Circuit High – Bank 1 Sensor 3 in RAM vehicles. The Exhaust Temperature Sensors are used by the Powertrain Control Module (PCM) to monitor engine exhaust temperatures in the aftertreatment system. The PCM will illuminate the MIL lamp after the diagnostic runs and fails in two consecutive drive cycles. This code can be caused by a variety of issues, including an EXHAUST GAS TEMPERATURE SENSOR 1/3 SIGNAL CIRCUIT SHORTED TO VOLTAGE, an EXHAUST GAS TEMPERATURE SENSOR 1/3 SIGNAL CIRCUIT OPEN/HIGH RESISTANCE, a SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE, an EXHAUST GAS TEMPERATURE SENSOR, EXTREME COLD AMBIENT TEMPERATURE AT ENGINE START UP, and a POWERTRAIN CONTROL MODULE (PCM). It is important to be aware of the causes and solutions of this issue in order to maintain the proper functioning of a RAM vehicle.
Causes and Solutions for RAM Code P242D
| Cause | Solution |
|---|---|
| EXHAUST GAS TEMPERATURE SENSOR 1/3 SIGNAL CIRCUIT SHORTED TO VOLTAGE | Repair the short in the circuit and replace the sensor. |
| EXHAUST GAS TEMPERATURE SENSOR 1/3 SIGNAL CIRCUIT OPEN/HIGH RESISTANCE | Repair the open/high resistance circuit and replace the sensor. |
| SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE | Repair the open/high resistance circuit and replace the sensor. |
| EXHAUST GAS TEMPERATURE SENSOR | Replace the sensor. |
| EXTREME COLD AMBIENT TEMPERATURE AT ENGINE START UP | Allow the vehicle to warm up and use the engine block heater if available. |
| POWERTRAIN CONTROL MODULE (PCM) | Replace the PCM. |
RAM Code P242D is a diagnostic trouble code that indicates an issue with the Exhaust Gas Temperature Sensor Circuit High – Bank 1 Sensor 3 in RAM vehicles. This code is triggered when the PCM monitors the change in signal voltage from the Exhaust Temperature Sensors, and converts this to a temperature value. When the diagnostic runs and fails in two consecutive drive cycles, the MIL lamp will be illuminated. It is important to be aware of the causes and solutions of this issue for the proper functioning of a RAM vehicle. There are a variety of causes, such as an EXHAUST GAS TEMPERATURE SENSOR 1/3 SIGNAL CIRCUIT SHORTED TO VOLTAGE, an EXHAUST GAS TEMPERATURE SENSOR 1/3 SIGNAL CIRCUIT OPEN/HIGH RESISTANCE, a SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE, an EXHAUST GAS TEMPERATURE SENSOR, EXTREME COLD AMBIENT TEMPERATURE AT ENGINE START UP, and a POWERTRAIN CONTROL MODULE (PCM). Solutions for these causes range from repairing the circuit and replacing the sensor to replacing the PCM.
Exhaust Gas Temperature Sensor Circuit Shorted to Voltage
The EXHAUST GAS TEMPERATURE SENSOR 1/3 SIGNAL CIRCUIT SHORTED TO VOLTAGE is the most common cause of RAM Code P242D. This occurs when the signal voltage from the Exhaust Temperature Sensor is shorted to voltage, causing the PCM to receive an incorrect signal. The solution to this problem is to repair the short in the circuit and replace the sensor.
Exhaust Gas Temperature Sensor Circuit Open/High Resistance
The EXHAUST GAS TEMPERATURE SENSOR 1/3 SIGNAL CIRCUIT OPEN/HIGH RESISTANCE is another common cause of RAM Code P242D. This occurs when there is an open or high resistance in the circuit, which causes the PCM to receive an incorrect signal. The solution to this problem is to repair the open/high resistance circuit and replace the sensor.
Sensor Ground Circuit Open/High Resistance
The SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE is another cause of RAM Code P242D. This occurs when the ground circuit has an open or high resistance, which causes the PCM to receive an incorrect signal. The solution to this problem is to repair the open/high resistance circuit and replace the sensor.
Exhaust Gas Temperature Sensor
The EXHAUST GAS TEMPERATURE SENSOR is another cause of RAM Code P242D. This occurs when the sensor has failed, causing the PCM to receive an incorrect signal. The solution to this problem is to replace the sensor.
Extreme Cold Ambient Temperature at Engine Start Up
EXTREME COLD AMBIENT TEMPERATURE AT ENGINE START UP is another cause of RAM Code P242D. This occurs when the engine is started in cold temperatures, causing the PCM to receive an incorrect signal. The solution to this problem is to allow the vehicle to warm up and use the engine block heater if available.
Powertrain Control Module (PCM)
The POWERTRAIN CONTROL MODULE (PCM) is another cause of RAM Code P242D. This occurs when the PCM has failed, causing the PCM to receive an incorrect signal. The solution to this problem is to replace the PCM.
Conclusion
RAM Code P242D is a diagnostic trouble code that indicates an issue with the Exhaust Gas Temperature Sensor Circuit High – Bank 1 Sensor 3 in RAM vehicles. It is important to be aware of the causes and solutions of this issue in order to maintain the proper functioning of a RAM vehicle. There are a variety of causes, such as an EXHAUST GAS TEMPERATURE SENSOR 1/3 SIGNAL CIRCUIT SHORTED TO VOLTAGE, an EXHAUST GAS TEMPERATURE SENSOR 1/3 SIGNAL CIRCUIT OPEN/HIGH RESISTANCE, a SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE, an EXHAUST GAS TEMPERATURE SENSOR, EXTREME COLD AMBIENT TEMPERATURE AT ENGINE START UP, and a POWERTRAIN CONTROL MODULE (PCM). Solutions for these causes range from repairing the circuit and replacing the sensor to replacing the PCM. To ensure optimal performance of your RAM vehicle, it is essential to take the necessary steps to troubleshoot and fix RAM Code P242D when it occurs.
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