Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. P2080 OBD-II Trouble Code: Exhaust Gas Temperature Sensor Circ Range/Perf Bank 1 Sensor 1

P2080 OBD-II Trouble Code: Exhaust Gas Temperature Sensor Circ Range/Perf Bank 1 Sensor 1

diagnostic check engine light

P2080 code definition

The P2080 code is a generic powertrain code related to the transmission, including pressure faults and sensor failures. In this case, the electronic control module (ECM) has found a malfunction or fault in the exhaust gas temperature sensor circuit bank 1 sensor 1.

Codes related to the P2080 include:

What the P2080 code means

A code P2080 will be stored when the ECM has detected a fault or malfunction in the exhaust gas temperature sensor circuit bank 1 sensor 1. Typically, bank 1 means the bank of the engine that contains the number 1 cylinder, and sensor 1 is the pre-catalytic converter sensor, or upstream sensor.

A vehicle’s exhaust gas temperature sensor usually is a two-wire sensor, which is located in the exhaust down pipe. This sensor is utilized in diesel, gasoline, and turbocharged engines. However, in a diesel engine the sensor is typically located near the diesel particulate filter (DPF) portion of the exhaust system.

The sensor is of the temperature reactive resistor type, and is supplied with around a 5-volt power wire and ground wire. When the exhaust gas temperature goes up, the resistance level in the sensor will decrease, which allows a feedback voltage signal to the ECM to increase. When the engine is off and exhaust temperature decreases, circuit resistance will increase and the feedback voltage signal to the ECM will decrease. The ECM takes these voltage variations as the temperature of the exhaust gas and adjusts ignition timing or air/fuel ratio.

What causes the P2080 code?

Several problems may cause a P2080 code including:

  • Damaged, defective, corroded, or loose wiring
  • Exhaust gas temperature sensor short to ground
  • Use of an aftermarket off-road exhaust system, which can cause a decrease in backpressure
  • Exhaust leak upstream of the sensor
  • Damaged or defective exhaust gas temperature sensor 1
  • Damaged or defective ECM (rare)

What are the symptoms of the P2080 code?

Symptoms of a P2080 code may include:

  • Check engine or warning light may illuminate
  • There will most likely be no symptoms other than a stored P2080 code

How does a mechanic diagnose the P2080 code?

A mechanic may use several methods to diagnose a P2080 trouble code, including:

  • Utilize an OBD-II scanner to check for a stored P2080 trouble code
  • Visually inspect wiring and related electrical components for signs of damage, corrosion, or loose connections
  • Visually inspect the exhaust system for signs of leaks upstream of the sensor
  • Using a digital volt or ohmmeter, test resistance of the exhaust gas temperature sensor 1, which should be around 150 ohms
  • Utilize a heat gun to heat the resistor and observe resistance level of the sensor
  • Use a digital volt or ohmmeter to perform a continuity test on the signal wire

Common mistakes when diagnosing the P2080 code

Often, the oxygen sensor is mistaken for the exhaust gas temperature sensor, or believed that it is integrated into the heated oxygen sensor, resulting in the incorrect replacement of an oxygen sensor. It is recommended to fully diagnose the exhaust gas temperature sensor and related circuitry when a P2080 code is stored.

How serious is the P2080 code?

Because a vehicle’s safe driving operation most likely will be impacted due to faults that store a P2080 code, this code is considered a potentially serious code. When this code appears, it is recommended to immediately take your vehicle to your local service center or mechanic for repair and diagnosis.

What repairs can fix the P2080 code?

Several repairs can fix a P2080 trouble code and include:

Need help with a P2080 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

Veteran and Military Driver Laws and Benefits in Idaho
The state of Idaho offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...

Related questions

Q: The Check Engine Light came on, I hooked it up to my scanner and got the code P0308

Hello. A cylinder misfire can be caused by many things. If you are not able to notice any issues with engine performance then the misfire is likely minor or intermittent. A few common causes for a misfire are a faulty...

Q: How do I know that my OBD system is working right?

The OBD system on your vehicle is a self-monitoring system. The Powertrain Control Module monitors and controls all of the systems and functions that regulate fuel, ignition, emissions, and engine cooling as well as having some minor control over air...

Q: Check Engine light comes on when cars RPMS go over 4000 error code P0344

Hi there. This code is for a bad camshaft sensor. It can be caused by a bad sensor or it can come from another issue. I usually check the sensor first and then I check the timing belt. Most of...