P0547 Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 1

Definition: The OBD-II code P0547 indicates a malfunction in the exhaust gas temperature sensor circuit for bank 2, sensor 1. This sensor is responsible for monitoring the temperature of the exhaust gases and providing this information to the engine control module (ECM) to optimize performance and emissions.

P0547 – Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 1

Description: The Powertrain Control Module (PCM) has detected a problem with the exhaust gas temperature sensor circuit for bank 2 sensor 1.

Severity: Moderate

Common Causes

P0547 – Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 1

Description: The Powertrain Control Module (PCM) detects a voltage signal from the exhaust gas temperature sensor circuit that is out of range or not within specifications.

Common Causes:

• Faulty exhaust gas temperature sensor
• Open or short in the wiring harness for the sensor
• Poor electrical connection related to the sensor circuit
• Exhaust leaks near the sensor
• Issues with the PCM itself

 

Common Misdiagnosis

OBD2 Code: P0547

Description: Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 1

Common Misdiagnosis: Replacing the exhaust gas temperature sensor without checking for wiring issues or connector problems.

 

Common Diagnostic Steps

OBD2 Code: P0547

Description: Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 1

• Check for any additional trouble codes that may be related to the exhaust gas temperature sensor.
• Inspect the exhaust gas temperature sensor wiring and connectors for damage or corrosion.
• Measure the resistance of the exhaust gas temperature sensor using a multimeter to ensure it is within specifications.
• Verify that there is proper voltage supply and ground at the sensor connector.
• If equipped, check for software updates or technical service bulletins (TSBs) related to this code.
• Test drive the vehicle while monitoring live data from the exhaust gas temperature sensor using an OBD2 scanner to confirm its operation.
• If necessary, replace the faulty exhaust gas temperature sensor with a new one and clear any stored codes.