P0549 Fault Code

Exhaust Gas Temperature Sensor Circuit High - Bank 2 Sensor 1

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0549 code indicates that there is an issue with the Exhaust Gas Temperature (EGT) Sensor Circuit for Bank 2 Sensor 1. This sensor is crucial for monitoring the temperature of the exhaust gases in the vehicle's emissions system. A high reading from this sensor can indicate a potential problem that may need immediate attention.

• The sensor helps the engine control unit (ECU) optimize performance and reduce emissions.
• If the sensor fails, it can lead to poor engine performance and increased emissions, potentially affecting the vehicle's compliance with emissions regulations.

What are the symptoms of the P0549 code?

If your vehicle has triggered the P0549 code, you may experience:

• An illuminated check engine light.
• Reduced engine performance and power.
• Increased emissions, potentially leading to failing an emissions test.
• Changes in exhaust sound or unusual smells due to poor combustion.

What causes the P0549 code?

Several factors can trigger the P0549 code, including:

• A malfunctioning exhaust gas temperature sensor.
• Wiring issues, such as shorts or opens in the sensor circuit.
• Poor connections or damaged connectors that disrupt the circuit.
• High operating temperatures that may be caused by exhaust leaks or other related issues in the exhaust system.

How to fix P0549?

To repair the P0549 fault code, consider the following steps:

• Inspect the exhaust gas temperature sensor for damage or malfunction and replace it if necessary.
• Check the wiring and connectors in the sensor circuit for any signs of wear, corrosion, or damage, and repair or replace as needed.
• Ensure that the exhaust system is free from leaks that could cause abnormal temperature readings.
• After making repairs, clear the codes and perform a test drive to see if the problem persists.