The P2484: Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 5 refers to an issue where the exhaust gas temperature sensor (Bank 1 Sensor 5) is sending intermittent or erratic signals. This can be caused by faulty wiring, poor connections, or a malfunctioning sensor, which affects the accuracy of exhaust temperature readings and could lead to improper engine performance.
P2484 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P2484: Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 5 |
| Is it serious? | Yes, an intermittent or erratic signal can lead to incorrect exhaust temperature readings, potentially causing damage to the exhaust system or affecting engine performance. |
| Possible causes | – Intermittent or erratic signal in the exhaust gas temperature sensor circuit for Bank 1 Sensor 5 – Faulty sensor – Wiring or connector issues |
| How to diagnose? | – Check for intermittent or erratic issues in the exhaust gas temperature sensor circuit for Bank 1 Sensor 5 – Inspect wiring and connectors – Replace faulty sensor if needed |
P2484 Meaning
The P2484: Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 5 code indicates that the exhaust gas temperature sensor is experiencing an inconsistent or erratic signal. This can happen due to faulty wiring, loose connections, or a malfunctioning sensor itself. Such irregularities can disrupt proper monitoring of exhaust temperatures, leading to potential engine performance issues or exhaust damage.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to determine if there are any other related codes that could point to multiple issues. | OBD-II Scanner |
| Monitor Sensor Signal | Use an OBD-II scanner with live data capabilities to monitor the sensor’s signal and verify if there are erratic or intermittent readings. | OBD-II Scanner with Live Data |
| Inspect the Sensor | Visually inspect the exhaust gas temperature sensor for signs of physical damage or improper fitting. Ensure it is securely connected. | Flashlight, Safety Gloves |
| Inspect Wiring and Connectors | Check the wiring and connectors for any signs of wear, loose connections, or corrosion that could lead to an intermittent signal. | Flashlight, Multimeter |
| Wiggle Test Wiring | Perform a “wiggle test” by gently moving the wires while monitoring the sensor’s output for erratic changes to detect any loose connections. | OBD-II Scanner, Flashlight |
| Test Sensor Resistance | Use a multimeter to measure the sensor’s resistance and verify if it is within manufacturer specifications. Replace if it fails the test. | Multimeter |
| Replace Faulty Sensor or Wiring | Replace the exhaust gas temperature sensor or repair/replace any faulty wiring if necessary. | Replacement Sensor, Tools Set |
| Clear the Code and Test Drive | Clear the code using an OBD-II scanner and take the vehicle for a test drive to ensure that 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 P2484 code has not returned. If the code reappears, further diagnostic steps may be required. | OBD-II Scanner |
Free PDF: How to choose OBD2 scanner
I’ve made you a free PDF to choose the OBD2 scanner in 5 minutes.
✅ Which OBD2 scanner is best?
✅ Which type should you get (DIY, Pro, Hobby)
✅ What is the best scanner for the exact brand/feature (e.g best for BMW)
✅ How to get a Bi-Directional tool for as cheap as $40
✅ Discount coupons for scanners
PDF is 100% free and it is designed to help you pick a scanner in less than a few minutes! Not a boring 50-page guide.
Just tell me where to send it.
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)