P0549 GMC Code - Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 1
Quick Answer
The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 1, Exhaust Gas Temperature Sensor Bank 2 Sensor 1 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 Sensor 1 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0549 GMC indicates Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 1.
- Common causes
- Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 1, Exhaust Gas Temperature Sensor Bank 2 Sensor 1 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 Sensor 1 circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0549 GMC Description
What are the Possible Causes of the DTC P0549 GMC?
- Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 1
- Exhaust Gas Temperature Sensor Bank 2 Sensor 1 harness is open or shorted
- Exhaust Gas Temperature Sensor Bank 2 Sensor 1 circuit poor electrical connection
- Exhaust leaks
- Excessive particulate matter buildup on sensor
How to Fix the DTC P0549 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0549 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0549 GMC Code
1. What are the common symptoms of OBDII code P0549 in a GMC vehicle?
- Common symptoms include decreased fuel efficiency, engine misfires, rough idling, and the illumination of the Check Engine Light.
2. What does the OBDII code P0549 GMC indicate?
- This code indicates a problem with the exhaust gas temperature sensor circuit high for bank 2 sensor 1 in the GMC vehicle.
3. What are the possible causes of OBDII code P0549 in a GMC vehicle?
- Possible causes include a faulty exhaust gas temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module (ECM).
4. How can I diagnose the OBDII code P0549 in my GMC vehicle?
- Diagnosing the code typically involves using an OBDII scanner to read the code, inspecting the exhaust gas temperature sensor and its connections, and testing the sensor's resistance.
5. Can I continue driving my GMC vehicle with OBDII code P0549?
- It is not recommended to drive the vehicle with this code present, as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.
6. How can I repair OBDII code P0549 in my GMC vehicle?
- Repair options may include replacing the exhaust gas temperature sensor, repairing or replacing damaged wiring or connectors, or reprogramming the ECM if necessary.
7. Is it possible to reset the OBDII code P0549 in a GMC vehicle without fixing the underlying issue?
- While you can clear the code using an OBDII scanner, it is important to address the root cause of the problem to prevent the code from reoccurring.
8. Are there any tips to prevent OBDII code P0549 from occurring in the future?
- Regular maintenance of the exhaust system, including checking the sensor connections and wiring, can help prevent issues that may trigger this code.
9. Can a DIY enthusiast fix OBDII code P0549 in a GMC vehicle?
- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this code themselves. However, professional help is recommended for complex issues.
10. How long does it typically take to repair OBDII code P0549 in a GMC vehicle?
- The repair time can vary depending on the exact cause of the issue and the expertise of the technician. It may take anywhere from a few hours to a full day to complete the repair.
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