The P2481: Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 5 refers to a problem where the exhaust gas temperature sensor (Bank 1 Sensor 5) is registering a low voltage. This could be due to a faulty sensor, wiring problems, or issues in the circuit itself, which can lead to improper monitoring of exhaust temperatures.
P2481 – Quick Overview
Code | Information |
---|---|
Meaning | P2481: Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 5 |
Is it serious? | Yes, this can lead to inaccurate exhaust temperature readings and potential engine damage. |
Possible causes | – Low voltage in the exhaust gas temperature sensor circuit for Bank 1 Sensor 5 – Faulty sensor – Wiring or connector issues |
How to diagnose? | – Measure voltage in the exhaust gas temperature sensor circuit for Bank 1 Sensor 5 – Inspect and test the sensor and wiring – Replace faulty components if needed |
P2481 Meaning
The P2481: Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 5 code indicates that the voltage detected by the exhaust gas temperature sensor (located at Bank 1 Sensor 5) is lower than expected. This may be due to a malfunctioning sensor, wiring issues, or poor electrical connections. If left unresolved, it could prevent proper monitoring of exhaust gas temperatures, leading to decreased performance and possible damage to the exhaust system.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to determine if there are other related codes that could indicate multiple issues. | OBD-II Scanner |
Measure Voltage in Sensor Circuit | Measure the voltage in the exhaust gas temperature sensor circuit for Bank 1 Sensor 5. Ensure it matches manufacturer specifications. | Multimeter |
Inspect the Sensor | Visually inspect the exhaust gas temperature sensor for damage or wear. Verify that the sensor is properly seated and connected. | Flashlight, Safety Gloves |
Test the Sensor | Test the sensor’s resistance and compare it to the manufacturer’s specifications to ensure proper function. | Multimeter |
Inspect Wiring and Connectors | Check the wiring and connectors for damage, corrosion, or loose connections. Repair or replace as needed. | Flashlight, Multimeter |
Replace Faulty Components | Replace the exhaust gas temperature sensor or repair wiring if any faults are identified during inspection or testing. | Replacement Sensor, Tools Set |
Clear the Code and Test Drive | Clear the code using an OBD-II scanner and perform a test drive to verify if the problem has been resolved. | OBD-II Scanner, Vehicle Owner’s Manual |
Recheck for Codes | After the test drive, re-scan the vehicle to confirm that the P2481 code has not returned. If the code reappears, further diagnosis may be required. | OBD-II Scanner |

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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)