AutoCodes – GMC – P2470 2014 GMC Sierra

P2470 2014 GMC Sierra 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 2014 GMC Sierra 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 190

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 2014 GMC Sierra 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 2014 GMC Sierra - Exhaust Gas Temperature Sensor 4 Circuit Low Voltage - AutoCodes.com — P2470 2014 GMC Sierra Code - Exhaust Gas Temperature Sensor 4 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2470 2014 GMC Sierra?

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 2014 GMC Sierra?

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 2014 GMC Sierra 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 2014 GMC Sierra code?

Need more information on how to fix the P2470 2014 GMC Sierra code? Get Access to Factory Service Manuals

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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 2014 GMC Sierra Code

1. What does the OBDII code P2470 mean on a 2014 GMC Sierra?

P2470 indicates a "Exhaust Gas Temperature Sensor 4 Circuit Low Voltage," meaning the sensor is detecting lower-than-expected voltage in the circuit for Exhaust Gas Temperature Sensor 4.

2. What are the common symptoms of code P2470 in a 2014 GMC Sierra?

Symptoms may include the check engine light illuminating, poor fuel efficiency, reduced engine performance, or the vehicle entering limp mode.

3. What causes the P2470 code to appear in a 2014 GMC Sierra?

Common causes include a faulty exhaust gas temperature sensor, damaged wiring or connectors, short circuits, or issues with the engine control module (ECM).

4. How do you diagnose the P2470 code in a 2014 GMC Sierra?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the sensor and its wiring for damage, checking for loose or corroded connectors, and testing the sensor's voltage output with a multimeter.

5. Can you drive a 2014 GMC Sierra with the P2470 code active?

While it may still be drivable, ignoring the issue could result in worse fuel economy, reduced performance, or potential damage to the exhaust or emissions system.

6. How do you fix the P2470 code on a 2014 GMC Sierra?

Repairs may include replacing the faulty exhaust gas temperature sensor, repairing or replacing damaged wiring, or cleaning and reconnecting corroded connectors.

7. How much does it cost to fix the P2470 code on a 2014 GMC Sierra?

The cost can vary, but replacing the exhaust gas temperature sensor typically ranges from $150 to $300, including parts and labor.

8. What tools are needed to fix the P2470 code on a 2014 GMC Sierra?

You may need an OBDII scanner, a multimeter, basic hand tools, and possibly a wiring repair kit if there is damage to the harness.

9. Can a faulty ECM cause a P2470 code in a 2014 GMC Sierra?

Yes, while less common, a malfunctioning ECM could misinterpret sensor data and trigger the code even if the sensor and wiring are functioning properly.

10. Is the P2470 code related to emissions in a 2014 GMC Sierra?

Yes, the exhaust gas temperature sensor is part of the emissions control system, and a fault in this sensor can negatively impact emissions performance.