P247C: Exhaust Gas Temperature Out of Range Bank 2 Sensor 1

Introduction

DTC P247C is one of the most common diagnostic codes that can appear in the engine control units (ECU) of modern vehicles. This code indicates a problem with the exhaust gas temperature, specifically for the sensor in Bank 2, Sensor 1. Proper management of the exhaust gas temperature is crucial for efficient engine operation and compliance with emissions regulations. In this article, we will look at the symptoms, causes, diagnosis and solutions to address this problem.

Symptoms

When a problem occurs associated with the DTC code P247C, the driver may notice several symptoms, including:

  • Check Engine Light (MIL) comes on
  • Reduced engine performance
  • Increased fuel consumption
  • Burning odors or abnormal fumes coming from the exhaust
  • Dashboard Error Messages Related to Emission Problems

Cause

The causes of a P247C code can vary, but the most common include:

  • Bank 2 exhaust gas temperature sensor malfunction
  • Wiring problems or damaged connectors
  • Water or dirt ingress into the sensor
  • Engine overheating problems
  • Malfunctions in the engine management system or ECU
  • Defects in the exhaust system, such as blockages or leaks

Diagnosis

Diagnosing DTC P247C requires a systematic approach. Here are the steps to follow:

  1. Vehicle Scan :
    Use an OBD-II diagnostic tool to read the DTC and record any related codes, such as P247A or P247B, which may provide further clues to the problem.

  2. Visual inspection :
    Examine the temperature sensor wiring and connectors. Look for signs of wear, damage, or corrosion.

  3. Sensor Test :
    Use a multimeter to measure the resistance and voltage of the temperature sensor. Compare the values with the specifications provided by the manufacturer.

  4. Exhaust system check :
    Check for blockages or leaks in the exhaust system that could affect the gas temperature.

  5. Monitoring readings :
    Using a scan tool, monitor the temperature sensor readings in real time as the engine runs. Compare the readings to those of Bank 1 to identify any anomalies.

Resolution and Repair

Depending on the diagnosis results, the following solutions can be applied:

  • Sensor Replacement :
    If the sensor is faulty, replacement is the easiest solution. Make sure to use an original or equivalent quality replacement.

  • Wiring Repair :
    If wiring problems are identified, proceed with any necessary repairs. This may include replacing damaged connectors or repairing broken wires.

  • Cleaning the exhaust system :
    If there are any blockages in the exhaust system, it is important to remove them. This may require cleaning the catalytic converter or replacing damaged parts.

  • ECU control unit check :
    If there are no physical problems, an engine control unit update or reprogramming may be necessary to resolve the management issues.

Insight: Components involved in the failure

The P247C code primarily involves the exhaust gas temperature sensor. This sensor is responsible for measuring the temperature of the exhaust gases leaving the engine and sending this information to the engine control unit (ECU) to optimize engine performance and emissions.

Exhaust gas temperature sensor

  • Function :
    Measures exhaust gas temperature to provide critical data to the ECU.
  • Sensor Types :
    There are various types of sensors, but the most common are thermocouple sensors and thermistors.
  • Location :
    They are usually found in the exhaust system, before or after the catalytic converter.

Wiring and connectors

  • Importance :
    The quality of the wiring and connectors is essential to ensure correct transmission of signals to the ECU.
  • Maintenance :
    Regular checks are essential to prevent corrosion problems or physical damage.

Conclusions

DTC P247C, indicating exhaust gas temperature out of range for the Bank 2 sensor, can significantly affect vehicle performance and emissions. Through accurate diagnosis and timely repair, the problem can be resolved and the engine restored to proper operation. Always remember to follow the manufacturer's guidelines and use high-quality components to ensure maximum reliability and performance of your vehicle.

Important
Not all OBD2 codes used by one manufacturer are used by other brands, and may not have the same meaning.
The information presented here is for informational purposes only. We are not responsible for any actions you take on your vehicle. If you have any concerns about repairing your vehicle, please contact your repair shop.