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P1407 2018 Chevrolet Silverado Code - Exhaust Gas Recirculation Control Circuit Shorted

Quick Answer

The P1407 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Exhaust Gas Recirculation (EGR) control circuit being shorted. Common causes include Shorted wiring in the EGR control circuit, Faulty EGR valve or EGR solenoid, Corrosion or poor connections in the EGR system. 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 2018 Chevrolet Silverado indicates Exhaust Gas Recirculation Control Circuit Shorted.
Common causes
Common causes include Shorted wiring in the EGR control circuit, Faulty EGR valve or EGR solenoid, Corrosion or poor connections in the EGR system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P1407 2018 Chevrolet Silverado Description

The P1407 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Exhaust Gas Recirculation (EGR) control circuit being shorted. The EGR system is crucial for reducing emissions and improving fuel efficiency by recirculating a portion of the exhaust gases back into the intake manifold. This helps lower combustion temperatures and reduces the formation of harmful nitrogen oxides (NOx).

OBDII Code P1407 2018 Chevrolet Silverado - Exhaust Gas Recirculation Control Circuit Shorted
P1407 2018 Chevrolet Silverado Code - Exhaust Gas Recirculation Control Circuit Shorted

Common Causes of P1407 2018 Chevrolet Silverado

  1. Shorted wiring in the EGR control circuit
  2. Faulty EGR valve or EGR solenoid
  3. Corrosion or poor connections in the EGR system
  4. ECM software or hardware issues
  5. Environmental factors such as moisture or debris affecting the EGR components

Symptoms of P1407 2018 Chevrolet Silverado

  1. Check Engine Light illuminated
  2. Rough idling or stalling
  3. Reduced engine performance
  4. Increased fuel consumption
  5. Failed emissions test

How to Fix P1407 2018 Chevrolet Silverado

  1. Begin by conducting a thorough visual inspection of the EGR system components, looking for any signs of damage, corrosion, or loose connections.
  2. Use a multimeter to test the continuity of the wiring in the EGR control circuit, checking for any shorts or open circuits.
  3. Test the EGR valve and EGR solenoid for proper operation, ensuring they are functioning correctly.
  4. Replace any damaged wiring, connectors, or EGR components as needed.
  5. Clear the DTC with a scan tool and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P1407 2018 Chevrolet Silverado

The typical repair costs for addressing a P1407 code on a 2018 Chevrolet Silverado can vary depending on the extent of the issue and the specific parts that need to be replaced. On average, the parts for an EGR system repair can range from $100 to $300, while labor costs may add another $100 to $200. Overall, the total repair cost could fall between $200 and $500. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for more accurate estimates.

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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 2018 Chevrolet Silverado Code

1. What does the OBDII code P1407 mean for a 2018 Chevrolet Silverado?

The P1407 code indicates an issue with the Exhaust Gas Recirculation (EGR) Control Circuit, specifically a shorted circuit.

2. What are the common symptoms of code P1407 in a 2018 Chevrolet Silverado?

Symptoms may include the check engine light turning on, poor engine performance, rough idling, reduced fuel efficiency, or increased emissions.

3. What causes the P1407 code in a 2018 Chevrolet Silverado?

Common causes include a short in the EGR control circuit wiring, a faulty EGR valve, a malfunctioning EGR control solenoid, or corroded electrical connections.

4. Can I still drive my 2018 Chevrolet Silverado with a P1407 code?

While the vehicle may still be drivable, it is not recommended, as the issue can cause poor performance and increased emissions, potentially leading to further engine damage if left unresolved.

5. How do I diagnose the P1407 code in my 2018 Chevrolet Silverado?

Start by inspecting the EGR control circuit wiring and connectors for damage or corrosion, then test the EGR valve and solenoid for proper function using a multimeter or scan tool.

6. How is the P1407 code typically fixed in a 2018 Chevrolet Silverado?

Repairs may involve replacing damaged wiring, cleaning or replacing the EGR valve, repairing or replacing the EGR control solenoid, or addressing any corroded connectors.

7. How much does it cost to fix the P1407 code on a 2018 Chevrolet Silverado?

Repair costs can vary but typically range from $150 to $500, depending on whether the issue is with the wiring, the EGR valve, or the solenoid.

8. Can a P1407 code cause my 2018 Chevrolet Silverado to fail an emissions test?

Yes, a P1407 code can cause increased emissions, which may result in your vehicle failing an emissions test.

9. Is a faulty EGR valve the only cause of the P1407 code in a 2018 Chevrolet Silverado?

No, other potential causes include issues with the EGR control solenoid, shorted or damaged wiring, or corroded electrical connections.

10. Can I fix the P1407 code on my 2018 Chevrolet Silverado myself?

If you have basic automotive repair skills and tools, you may be able to fix issues like damaged wiring or a faulty EGR valve. For complex electrical diagnostics, professional assistance is recommended.

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