The P2470: Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 4 refers to a detected low voltage in the exhaust gas temperature sensor circuit specifically for Bank 1 Sensor 4. This could be due to a malfunctioning sensor, wiring issues, or a connector problem, which can lead to incorrect temperature readings and subsequently impact engine performance and emissions control.
P2470 – Quick Overview
Code | Information |
---|---|
Meaning | P2470: Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 4 |
Is it serious? | Yes, this code can lead to incorrect exhaust temperature readings, potentially causing performance problems or increased emissions. |
Possible causes | – Low voltage in the exhaust gas temperature sensor circuit for Bank 1 Sensor 4 – Faulty sensor – Wiring or connector issues |
How to diagnose? | – Measure voltage in the exhaust gas temperature sensor circuit for Bank 1 Sensor 4 – Inspect and test the sensor and wiring – Replace faulty components if needed |
P2470 Meaning
The P2470: Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 4 code signifies that the sensor, specifically for Bank 1 Sensor 4, is reporting a lower voltage than expected. This could indicate issues such as a faulty sensor, poor wiring connections, or damage to the sensor, leading to improper temperature monitoring and potential engine inefficiency or emission concerns.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to check if there are any other related codes present that might provide additional context. | OBD-II Scanner |
Inspect Sensor and Wiring Visually | Visually inspect the exhaust gas temperature sensor for physical damage, loose connectors, or wear in the wiring. Make sure that all connections are secure and the wiring is intact. | Flashlight, Safety Gloves |
Measure Voltage in the Sensor Circuit | Use a multimeter to measure the voltage in the exhaust gas temperature sensor circuit for Bank 1 Sensor 4. Compare the readings against the manufacturer’s specifications. | Multimeter, Manufacturer’s Specifications |
Test the Sensor Performance | Use a diagnostic tool to verify that the sensor is functioning properly during engine operation, ensuring that it is not showing consistently low voltage. | Diagnostic Tool, Multimeter |
Verify Wiring Continuity | Check the continuity in the wiring leading to the sensor using a multimeter. This will help identify any breaks or shorts in the circuit. | Multimeter |
Replace Faulty Components | If the sensor or any associated wiring is found to be faulty, replace those components with manufacturer-approved replacements. | Replacement Sensor, Basic Hand Tools |
Clear Code and Test Drive | Clear the code using an OBD-II scanner and perform a test drive to monitor the vehicle. Observe sensor readings during the drive to confirm proper operation. | OBD-II Scanner, Vehicle Owner’s Manual |
Recheck for Codes | After the test drive, rescan the vehicle to ensure the P2470 code has not returned. If the code persists, further diagnosis may be necessary. | OBD-II Scanner |

OBD-II scanner Buyer’s Guide
- Scanner features explained
- Different types of scanners
- Scanners for coding/odometer/ECU/checks
- Best picks + discount codes

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)