P0547 Fault Code

Exhaust Gas Temperature Sensor Circuit - Bank 2 Sensor 1

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

The P0547 fault code indicates an issue with the Exhaust Gas Temperature (EGT) Sensor Circuit of Bank 2, Sensor 1. This sensor is crucial in measuring the temperature of the exhaust gases before they enter the catalytic converter. Proper functioning of this sensor helps in optimizing engine performance and reducing emissions. If the sensor fails or the circuit experiences problems, it can lead to incorrect readings, affecting the engine management system.

What are the symptoms of the P0547 code?

Symptoms associated with a P0547 code may include:

• Check Engine Light (CEL) illuminated on the dashboard.
• Decreased fuel efficiency due to improper air-fuel mixture adjustments.
• Engine performance problems, such as stalling or hesitation.
• Increased emissions leading to potential failures in emissions tests.

What causes the P0547 code?

Common causes of the P0547 fault code include:

• A malfunctioning exhaust gas temperature sensor.
• Damaged or frayed wiring in the sensor circuit.
• Poor connections at the sensor or in the wiring harness.
• Issues related to the powertrain control module (PCM).
• Exhaust leaks near the sensor affecting temperature readings.

How to fix P0547?

To resolve the P0547 fault code, consider the following steps:

• Inspect the EGT sensor and its wiring for signs of damage or corrosion. Replace damaged components.
• Check the sensor connector for signs of poor connection or moisture intrusion and repair as necessary.
• Test the sensor for proper operation using a multimeter; replace if it's faulty.
• Ensure that there are no exhaust leaks present that may affect the sensor readings.
• Clear the fault code and test drive the vehicle to see if the issue reoccurs. Further diagnostics may be needed if the code returns.