Skip the auto shop - Our mechanics make house calls

P2081 OBD-II Trouble Code: Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 1

check engine light logo

P2081 trouble code definition

Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 1

What the P2081 code means

P2081 is an OBD-II generic code for the exhaust gas temperature sensor circuit signal is intermittent for bank 1 sensor 1 to the engine control module (ECM). This means the sensor signal voltage signal return is intermittent within specification.

What causes the P2081 code?

  • The engine control module signal return for the exhaust temperature sensor in bank 1 sensor 1 is not giving a steady reading output. The signal is within specifications when it is working properly.

  • The ECM turns on the Check Engine Light if the ECM detects a voltage return that is erratic or not giving a steady voltage return.

  • The wiring or connection to the sensor is loose or making poor contact.

What are the symptoms of the P2081 code?

  • The Check Engine Light will be illuminated and the code is set in ECM memory as a fault.

  • The engine fault may be the P2081 code and also the particulate filter light may be illuminated.

How does a mechanic diagnose the P2081 code?

  • Scans codes and documents the code in the ECM

  • Diagnoses the code as per the manufacturer's pinpoint test to verify the sensor signal

  • Checks the sensor connection for loose or corroded terminals

  • Disconnects the sensor and sees if the voltage of the sensor is steady compared to the scanner readings received through the ECM

Common mistakes when diagnosing the P2081 code?

  • Clearing ECM memory codes before checking the freeze frame data of the failure

  • Failing to clear ECM codes after the P2081 codes are fixed

  • Replacing the sensor when the connector has corrosion in the connections

How serious is the P2081 code?

Code P2081 is an indication that the sensor or connector may need serviced and/or repaired. The sensor is the most common cause of erratic signals.

What repairs can fix the P2081 code?

  • Replacing the sensor after the connection is cleaned of any corrosion

  • Repairing the wiring or connection to the exhaust temperature sensor assembly

  • Replacing the ECM for an erratic circuit in the ECM temperature sensor circuit

Additional comments for consideration regarding the P2081 code

Code P2081 can be generated from loose wire connections from a harness that is not secured and the connection is allowed to flex excessively.

Need help with a P2081 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

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....
How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...


Related questions

Q: 2054 fault code

Hello. The code you are getting is for what is known as the PremAir sensor. This is the ozone air detection sensor. They are a common failure on this vehicle. The sensor can usually be tested with a scan tool...

Q: failed emission test at Division of motor Vehicle

Hey there. The three different Check Engine codes you mentioned (P0420, P0133, and P0171) would need to be diagnosed first to see why they are stored in computer memory. You will need the mechanic clear the codes and test them...

Q: My traction control is off and half of the engine doesn't work, I hooked up a computer to it and the P0800 code is on

Hello, thanks for writing in. P0800 is the trouble code for an issue with the vehicle's Transfer Case Control system. When the transfer case control module, a computer that is separate from the engine computer, detects an issue with the...