Error Code P0549: What It Means & What To Do?

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The fault code P0549 can be defined as Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 1.

The P0549 code is a generic powertrain code related to vehicle speed controls and idle control system problems. Now if the engine control module will find a fault with the exhaust gas temperature sensor circuit like receiving higher than normal voltage signals in bank 2 sensor 1, then it would give rise to P0549 error code.

Want to learn something more about this fault code?

This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another.

This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

What causes this problem with the Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 1?

• There can be a catback exhaust system without EGT provisions installed
• Issue of loose or corroded connectors or terminals
• There can be broken wiring
• Flaws in the sensor
• Some defects in the computer

1. Oxygen Sensor - There can be some issues with the Oxygen Sensor due to which you may see P0549 code appearing over and over again. Visit us to buy best quality Oxygen Sensor online.
2. Air Fuel Ratio Sensor - A lot of issues can arise do to defective Air Fuel Ratio Sensor. Did you just see P0549 code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.
3. Powertrain Control Module - Faulty Powertrain Control Module can be the reason why P0549 code is flashing. Visit us to purchase top notch Powertrain Control Module online.
4. Engine Control Module - It is an important auto part which needs full care. A faulty Engine Control Module can be a reason behind the flashing up of P0549 code.
5. Catalytic Converter - OBD Code P0549 can appear because of faulty Catalytic Converter. Buy top notch Catalytic Converter online.
6. Exhaust Muffler - P0549 error code also relates to problems with the Exhaust Muffler. Find high grade Exhaust Muffler with us.

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0549 here:

Common Symptoms

• There can be an illumination of the check engine light on the dashboard

The repairs which you will have to do to correct this fault code are simply straightforward; you can surely pinpoint the necessary repairs on the basis of your diagnosis. Have a look at some common fixes:

• The damaged or shorted, open, or loose wiring or connectors should be repaired properly
• You can always replace the damaged or defective exhaust gas temperature sensor
• Replace or repair the exhaust system parts
• If there are some flaws in the engine control module (ECM), then it should be replaced
• Carefully clear all codes, test-drive the vehicle, and rescan to see if any codes reappear

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Here are some steps which you should follow in order to diagnose this fault code:

• Utilize an OBD-II scanner to check for a stored P0549 trouble code
• Locate the exhaust gas temperature sensor, which will vary in location depending on whether the model is a gasoline or diesel (sensors in a gasoline model will be between the exhaust manifold and converter, sensors in a diesel model will be located before the DPF)
• Carefully locate the specific Bank (in this case, bank 2), which will be on the side of the engine that does not contain Cylinder 1
• Visually inspect the sensor and related circuitry for visible signs of damage, including missing insulation or bare wiring
• Then the exhaust gas temperature sensor should be removed and use a digital volt/ohmmeter to check resistance; approximate 150 ohms is the goal
• Check voltage on engine side of the pigtail, if 5 volts is not found, the ECM may need to be replaced

Common Mistakes When Diagnosing The P0549 Code

Most of the times the mechanics assume that there is some fault with the oxygen sensor due to which the P0549 trouble code is occurring, but in reality the real issue can be with the exhaust gas temperature sensor