P0549 OBD-II: Exhaust Gas Temperature Sensor Circuit High
P0549 Severity
Will P0549 go away on its own?
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
What causes OBD-II fault code P0549?
The Exhaust Gas Temperature (EGT) Sensor tells the engine control module (PCM) the temperature of the exhaust gas coming out of the engine. High exhaust temperatures can lead to engine or turbocharger failure. If the PCM detects an incorrect signal from the EGT sensor, it will store code P0549.
OBD II Fault Code
- OBD II P0549
OBD-II Code Decreased engine performance is defined as a Exhaust Gas Temperature Sensor Circuit High
The Exhaust Gas Temperature (EGT) Sensor tells the engine control module (PCM) the temperature of the exhaust gas coming out of the engine. High exhaust temperatures can lead to engine or turbocharger failure. If the PCM detects an incorrect signal from the EGT sensor, it will store code P0549.
Decreased engine performance Symptoms
- Decreased engine performance
Common Problems That Trigger the P0549 Code
- EGR valve failure
- Exhaust Gas Temperature (EGT) sensor failure
- Fuel injector failure
- Powertrain Control Module (PCM) failure
- Wiring issue
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