AutoCodes – Chevrolet – P1407 2014 Chevrolet Silverado

P1407 2014 Chevrolet Silverado Code - Exhaust Gas Recirculation Control Circuit Shorted

Quick Answer

The Engine Control Module (ECM) supplies the Exhaust Gas Recirculation (EGR) valve with a 5 V reference circuit, a low reference circuit, an H-bridge motor directional control circuit, and a signal circuit. Common causes include Faulty Exhaust Gas Recirculation (EGR) Valve, Exhaust Gas Recirculation Valve harness is open or shorted, Exhaust Gas Recirculation Valve 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: P1407 2014 Chevrolet Silverado indicates Exhaust Gas Recirculation Control Circuit Shorted.
Common causes: Common causes include Faulty Exhaust Gas Recirculation (EGR) Valve, Exhaust Gas Recirculation Valve harness is open or shorted, Exhaust Gas Recirculation Valve 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 306

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 Jun 19, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1407 2014 Chevrolet Silverado Description

The Engine Control Module (ECM) supplies the Exhaust Gas Recirculation (EGR) valve with a 5 V reference circuit, a low reference circuit, an H-bridge motor directional control circuit, and a signal circuit. The EGR position sensor provides a signal voltage that changes relative to the EGR position. The EGR position sensor information is transmitted between the EGR valve and the ECM on the signal circuit. The Mass Air Flow (MAF) sensor signal is used by the ECM to detect the proper amount of EGR flow. The ECM will close the EGR valve, then open the EGR valve to 100%. The ECM will then calculate the MAF difference and determine if the proper EGR flow has been detected. The Diagnostic Trouble Code (DTC) will be set when the ECM detects a short circuit between the open and close terminals of the EGR motor for greater than 2.5 s.

OBDII Code P1407 2014 Chevrolet Silverado - Exhaust Gas Recirculation Control Circuit Shorted - AutoCodes.com — P1407 2014 Chevrolet Silverado Code - Exhaust Gas Recirculation Control Circuit Shorted

What does this mean?

What are the Possible Causes of the DTC P1407 2014 Chevrolet Silverado?

Faulty Exhaust Gas Recirculation (EGR) Valve
Exhaust Gas Recirculation Valve harness is open or shorted
Exhaust Gas Recirculation Valve circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P1407 2014 Chevrolet Silverado?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1407 2014 Chevrolet Silverado 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 P1407 2014 Chevrolet Silverado code?

Need more information on how to fix the P1407 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P1407 2014 Chevrolet Silverado Code

What does the OBDII code P1407 mean for a 2014 Chevrolet Silverado?

The code P1407 indicates a problem with the Exhaust Gas Recirculation (EGR) control circuit, specifically a shorted condition.

What are the common symptoms of code P1407 in a 2014 Chevrolet Silverado?

Symptoms may include poor engine performance, rough idling, increased emissions, and the Check Engine Light being illuminated.

What causes the P1407 code to appear?

Common causes include damaged EGR wiring, a faulty EGR valve, a short circuit in the EGR control circuit, or corroded electrical connectors.

Can I drive my 2014 Chevrolet Silverado with the P1407 code?

While the vehicle may still be operable, driving with this code can lead to reduced fuel efficiency and increased emissions. Itâ€™s best to address the issue promptly.

How do I diagnose code P1407 in my Silverado?

Start by inspecting the EGR valve, wiring, and connectors for damage or corrosion. Use a multimeter to check for shorts in the circuit, and consider scanning for related codes.

How is the P1407 code typically repaired?

Repairs may involve replacing the EGR valve, repairing or replacing damaged wiring, cleaning corroded connectors, or addressing short circuits in the control circuit.

What tools are needed to fix code P1407?

Youâ€™ll need a multimeter, OBDII scanner, basic hand tools, and possibly replacement parts like an EGR valve or wiring.

Can a faulty EGR valve trigger the P1407 code?

Yes, a malfunctioning EGR valve can cause this code by failing to regulate exhaust gases properly, which may lead to a short circuit in the control circuit.

How much does it cost to fix the P1407 code on a 2014 Chevrolet Silverado?

Repair costs can vary depending on the issue, but replacing the EGR valve typically costs $150â€“$400, including parts and labor.

Could a software update resolve the P1407 code?

In rare cases, a software update to the engine control module (ECM) might help if the issue is related to improper calibration, but physical repairs are usually required.