P2084 OBD Error Code: Problem & Solutions

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P2084 shows the engine performance which is reduced and is well-known as the exhaust gas temperature sensor circuit range/performance bank 1 sensor 2. The exhaust gas temperature sensor will keep informing the engine control module about the temperature of the exhaust gas which keeps going in and out of the selective catalytic reduction. If the PCM finds out any unlikely signal which comes from the EGT sensor, the P2084 error will be set in the vehicle.

Range/performance issue of the exhaust gas temperature sensor 2 circuit on bank 1 is a sign that the P2084 error code is stored in the vehicle.

The temperature of the exhaust gas is monitored by the EGT sensor and this information is sent to the PCM through a voltage signal. When this information is received by the PCM, it will alter accordingly, so that the harmful emissions that are ejected into the environment are reduced.

The EGT sensor reacts to the temperature as it is a resistor. The resistance level will keep changing as the EGT level goes up or down and the variations of these voltage signal are communicated to the PCM. In order to make sure that the EGT does not rise to risky levels which could possibly harm the catalytic converter, adjustments are made to the air/fuel mixture or the ignition timing by the PCM. These changes are made according to the information in the voltage signal which has been received from the EGT sensor. If these voltage signals, go away from the fixed range which has been set by the vehicle manufacturer, then it is a sign of the malfunctioning of the EGT sensor. The check engine light will be displayed and the P2084 error will be stored.

What causes this problem with the Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2?

• Defective EGT sensor.
• The EGT sensor might have faced an internal short.
• The wires of the EGT sensor might be defective, loose or burnt.
• The connectors of the EGT sensor might be faulty, separated or eroded.
• You might find a big leaky exhaust placed right before the EGT sensor.
• There might be a decrease in back pressure as a high-performance aftermarket exhaust system is installed.

1. Powertrain Control Module - One main reason for a damaged powertrain control module is because of voltage overload where the voltage will be more than expected and it will likely damage the powertrain control module. The damaged powertrain control module will need immediate replacement so that the P2084 error code can be avoided.
2. Engine Control Module - Conditions of misfire shows that your ECM is faulty. Fix it as soon as possible to avoid the P2084 error in your vehicle by getting a new ECM from PartsAvatar.
3. Exhaust Gas Temperature Sensor - If the engine system if filled with too much fuel, then the EGT sensor can start malfunctioning. Check for the proper fuel level or replace the damaged EGT sensor instantly.
4. Diesel Particulate Filter - The vehicle will experience a very poor throttle if the DPF is malfunctioning. Fix or replace it as soon as possible.
5. Catalytic Converter - The performance of the engine will be very poor if the catalytic converter is damaged. Avoid the P2084 error by changing the damaged catalytic converter.
6. Oxygen Sensor - Very poor idle or erratic jerking are the common symptoms for a damaged oxygen sensor. Replace the faulty oxygen sensor by getting a new one from PartsAvatar.

We at Parts Avatar Canada care for our customers, and that’s why we will help you to diagnose P2084 code by listing out some major symptoms. They are mentioned below as follows:

Common Symptoms

• Check engine light will be well-lit. No signs at all.
• The P2084 trouble code might get stored in the PCM.
• The oxygen sensor might be very loose or eroded.
• The oxygen sensor might be heated.

Learn the ways with which you can correct this trouble code:

• Changing the EGT sensor.
• Fixing the defective, loose or molten EGT sensor wiring.
• Altering the defective, separated and eroded connectors of the EGT sensor.
• If there are any breaks in the exhaust in the position which is in front of the EGT sensor, it has to be immediately replaced.
• To increase the back pressure, an inline resistor to the aftermarket must be added.

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of EGT, PCM,the temperature of exhaust gas, catalytic converter, and a lot more. We are sure that now all your issues would be resolved.

If you want to easily diagnose this P2084 fault code, then all you have to do is to follow the steps which are mentioned below:

• With the help of an OBD-II scanner, recover every of the diagnostic trouble codes that are stored by the PCM.
• Check every connectors and wire for any damages, separations, molten wirings or erosions.
• Check the wires as well as the connectors at or near by the exhaust for any defects, disconnections or molten wires.
• If there are any damaged, loose, eroded or molten wires or connectors repair or replace them.
• Clear every of the trouble code and test drive the vehicle to see if the P2084 error code comes back.
• If the P2084 error returns back, you have to test the resistance level of the EGT sensor with the help of a volt/ohmmeter. Replace the EGT sensor, if the resistance falls below 50 ohms.
• Clear every of the trouble code and test drive the vehicle to see if the P2084 error code comes back.
• If the P2084 error returns back, you have to test the voltage signal of the EGT sensor, at the connectors. If there is no or low voltage signal, then you have to disconnect the EGT sensor at the PCM and perform a continuity test.
• Every wires and connecter which fails to meet the voltage signal requirements have to be repaired or replaced.
• If you don’t find any continuity in the EGT sensor connector at the PCM, then this is a sign that the PCM is damaged and it has to be reprogrammed or changed.

Common Mistakes When Diagnosing the P2084 Code

• With respect to the P2084 error code, one of the common mistakes that are made while diagnosing is that the oxygen sensor is always misunderstood instead of the EGT sensor.
• It is also misinterpreted that the EGT sensor is combined along with the heated oxygen sensor and as a result, the oxygen sensors are replaced by mistake.