P2080 OBD Error Code: Problem & Solutions

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P2080 error code shows an engine performance which is very low and is known as exhaust gas temperature sensor circuit range/performance bank 1 sensor 1. The EGT sensor will inform the engine control module about the temperature of the exhaust gas which keeps going inside and outside of the selective catalytic reduction (SCR). The P2080 error code will get stored if an irregular signal is found from the EGT sensor by the PCM.

If there is any issue or malfunction in the exhaust gas temperature sensor circuit bank 1 sensor 1 which has been detected by the ECM, then the P2080 error code will get stored. Bank 1 refers to the bank of the engine which has the number 1 cylinder and sensor 1 refers to the upstream sensor or the pre-catalytic converter sensor.

The exhaust gas temperature sensor of a vehicle is a two-wire sensor which is situated in the exhaust downpipe. This sensor is used in turbocharged, diesel and gasoline engine. Nevertheless, in a diesel engine, the sensor is available near the DPF portion of the exhaust system.

The sensor is generally of the temperature reactive resistor type and is usually provided with a 5-volt ground as well as power wire. When the exhaust gas temperature rises, the level of resistance in the sensor will go down which in turn permits the feedback voltage signal to increase to the ECM. If the exhaust temperature decreases while the engine is off, the resistance of the circuit will go high and the feedback voltage signal to ECM will go down. These voltage differences are taken by the ECM as the temperature of the exhaust and the ignition timing or the air/fuel ratio is adjusted.

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

• The wires are defective, broken, eroded or free.
• The EGT sensor might be shorted to the ground.
• A decrease in back pressure will arise if an aftermarket off-road exhaust system is used.
• There might be a leaky exhaust upstream sensor.
• EGT sensor bank 1 sensor 1 might be faulty.
• Faulty ECM which might be very rare.

1. Engine Control Module - The engine performance will be poor and there will be a drop in fuel economy if the ECM malfunctions. Replace it immediately.
2. Exhaust Gas Temperature Sensor - Improper regeneration of the DPF can likely damage the exhaust gas temperature sensor. Replace it quickly to avoid the P2080 error code in the vehicle.
3. Catalytic Converter - If the exhaust valve is leaky, then the catalytic converter can turn out to be faulty. Get the best catalytic converter for your vehicle from PartsAvatar.
4. Upstream Sensor - If the oxygen sensor finds out that the fuel mixture is very lean, then the P2080 error will be set in the vehicle. This is an indication that the upstream sensor is faulty and needs immediate replacement.
5. Diesel Particulate Filter - If the DPF is damaged, then the fuel economy will be very low. Get rid of the faulty DPF to avoid P2080 error.

It is essential 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 P2080 here:

Common Symptoms

• Illumination of the check engine or the warning light.
• Apart from the P2080 error code, there will be no other indications.
• Few of the turbocharged engines might be burnt or eroded.

Here are some ways with the help of which you will be able to correct the OBD Code P2080

• The damaged wire, as well as its linked electrical component, must be fixed.
• Changing the leaky exhaust system components.
• The exhaust gas temperature sensor bank 1 sensor 1 has to be changed if defective.
• The faulty ECM has to be changed. Clear every error codes and test-drive the vehicle to see if the error codes return.

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Here are some steps which you should follow in order to diagnose this P2080 fault code:

• In order to diagnose the P2080 error code, the mechanic will be using an OBD–II scanner.
• Carefully inspect the wires as well as its linked electrical components to see if there are any signs of damage, erosion or any loose connections.
• Visually check the exhaust system to see if there are any indications of leaks in the upstream of the sensor.
• With the help of a digital volt/ohm meter, a resistance of the exhaust gas temperature sensor 1 has to be checked, where the resistance should lie around 150 ohms.
• Heat the resistor with the help of a heat gun and carefully check the resistance level of the sensor.
• With the help of a digital volt or ohm meter carry out a continuity test on the signal wire.

Common Mistakes When Diagnosing the P2080 Code

• At times, it is believed that the EGT sensor is combined along with the heated oxygen sensor, or else the oxygen sensor is misunderstood instead of the EGT sensor, which results in replacing the oxygen sensor by mistake.
• When a P2080 error is stored, it is always best to completely diagnose the EGT sensor as well as its related circuits.