P0549 OBD-II: Exhaust Gas Temperature Sensor Circuit High

P0549 Severity

Moderate

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.

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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

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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Other OBD-II Codes

P0548: Exhaust Gas Temperature Sensor Circuit Low P0547: Exhaust Gas Temperature Sensor Circuit P0546: Exhaust Gas Temperature Sensor Circuit High P0545: Exhaust Gas Temperature Sensor Circuit Low P0544: Exhaust Gas Temperature Sensor Circuit

OBD II Fault Code

OBD II P0549

OBD-II Code Decreased engine performance is defined as a Exhaust Gas Temperature Sensor Circuit High

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

P0549 OBD-II: Exhaust Gas Temperature Sensor Circuit High

Will P0549 go away on its own?

What causes OBD-II fault code P0549?

Need a P0549 diagnosis? Trust our experts.

OBD II Fault Code

Decreased engine performance Symptoms

Common Problems That Trigger the P0549 Code

Ask our experts about P0549.

Other OBD-II Codes

OBD Code Resources

Need a P0549 diagnosis? Trust our experts.

OBD II Fault Code

Decreased engine performance Symptoms

Common Problems That Trigger the P0549 Code