AutoCodes – Generic – P2470

P2470 Code - Exhaust Gas Temperature Sensor 4 Circuit Low Voltage

Quick Answer

The Exhaust Gas Temperature sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) 4, Exhaust Gas Temperature Sensor 4 harness is open or shorted, Exhaust Gas Temperature Sensor 4 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P2470 indicates Exhaust Gas Temperature Sensor 4 Circuit Low Voltage.
Common causes: Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) 4, Exhaust Gas Temperature Sensor 4 harness is open or shorted, Exhaust Gas Temperature Sensor 4 circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 22,097

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 03, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P2470 Description

The Exhaust Gas Temperature sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. Exhaust temperature sensor 1 is the first exhaust temperature sensor in the exhaust system, the following exhaust temperature sensors are counted upward from the engine outlet to the exhaust system end. The Engine Control Module (ECM) supplies 5 V to the exhaust gas temperature signal circuit and supplies a ground to the low reference circuit. The exhaust gas temperature sensor temperature information is used by the ECM during the exhaust gas particulate filter cleaning process. The Diagnostic Trouble Code (DTC) will ve set when the ECM detects that the exhaust gas temperature sensor is less than 158 Ω for greater than 2 s.

OBDII Code P2470 - Exhaust Gas Temperature Sensor 4 Circuit Low Voltage - AutoCodes.com — P2470 Code - Exhaust Gas Temperature Sensor 4 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2470?

Faulty Exhaust Gas Temperature Sensor (EGTS) 4
Exhaust Gas Temperature Sensor 4 harness is open or shorted
Exhaust Gas Temperature Sensor 4 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2470?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

After starting the engine, the exhaust gas temperature sensor temperature should rise steadily, then stabilize after the engine reaches operating temperature. Exhaust gas temperature sensors may fail intermittently while operating under extreme temperatures. Review the Freeze Frame/Failure Records to verify the failure criteria.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2470 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2470 code?

Need more information on how to fix the P2470 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2470 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P2470 Chevrolet — Exhaust Gas Temperature Sensor 4 Circuit Low Voltage
P2470 Dodge — Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 4
P2470 Ford — Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 4
P2470 GMC — Exhaust Gas Temperature Sensor 4 Circuit Low Voltage

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2470 Code

1. What are the common symptoms of OBDII code P2470 (Exhaust Gas Temperature Sensor 4 Circuit Low Voltage)?

- Common symptoms include reduced engine performance, poor fuel efficiency, and the illumination of the check engine light.

2. What can cause OBDII code P2470 to trigger?

- Possible causes include a faulty exhaust gas temperature sensor, damaged wiring or connectors, issues with the sensor circuit, or a problem with the engine control module.

3. How serious is OBDII code P2470?

- While the code itself may not cause immediate harm to the vehicle, it can lead to reduced engine efficiency and performance if left untreated. It is recommended to address the issue promptly.

4. How can I diagnose OBDII code P2470?

- Diagnosing P2470 typically involves using a scan tool to read the code, checking the exhaust gas temperature sensor and its wiring for any visible damage, and testing the sensor's voltage output.

5. What are some repair tips for fixing OBDII code P2470?

- Repair tips may include replacing the exhaust gas temperature sensor, repairing or replacing damaged wiring or connectors, ensuring proper connections, and clearing the trouble code.

6. Can I drive my vehicle with OBDII code P2470?

- It is generally safe to drive the vehicle with this code, but it is advisable to address the issue as soon as possible to prevent potential long-term damage to the engine.

7. How much does it cost to repair OBDII code P2470?

- The cost of repair can vary depending on the underlying cause of the code, the cost of parts, and labor rates. It is recommended to consult with a professional mechanic for an accurate estimate.

8. Will resetting the check engine light fix OBDII code P2470?

- Simply resetting the check engine light will not fix the underlying issue causing P2470. The root cause should be diagnosed and repaired to prevent the code from reoccurring.

9. Can a DIY enthusiast fix OBDII code P2470 at home?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair P2470 at home. However, for complex issues, it is recommended to seek professional help.

10. How often does OBDII code P2470 occur in vehicles?

- OBDII code P2470 related to the Exhaust Gas Temperature Sensor 4 Circuit Low Voltage is not as common as other trouble codes, but it can still occur in vehicles equipped with this sensor.