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

How to Find the Keyless Code on a Ford Explorer or Mercury Mountaineer
Many Ford Explorers and Mercury Mountaineers were manufactured with an option known as the Ford keyless entry keypad. Some models refer to it as SecuriCode as well. It...
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...
P2422 OBD-II Trouble Code: Evaporative Emissions Control System (EVAP) Vent Valve Stuck Closed
Diagnostic Trouble Code (DTC): P2422 P2422 code definition Evaporative Emissions Control System (EVAP)...


Related questions

Q: Transmission P0932 error code in fiat bravo 120 tjet

This is a code related to the hydraulic pressure sensor in the transmission. As you may know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer activates a transmission solenoid,...

Q: Why car won't start help. Tried to help with obd.

Among the possible faults that you have listed, the crankshaft position sensor (CPS) is particularly noteworthy. If the CPS has indeed failed such is a very common cause of no starts. Consequently, your most efficient option would be to request...

Q: P0126 - check engine code

It is quite possible the code was set as an intermittent problem. The thermostat may have been stuck at one point, freed up and began working again, and then allowed the light to go off. Most computer controlled engine systems...