P1407 GMC Code - Exhaust Gas Recirculation Control Circuit Shorted
Quick Answer
The P1407 diagnostic trouble code for GMC vehicles indicates a problem with the Exhaust Gas Recirculation (EGR) control circuit being shorted. Common causes include Faulty EGR Valve: A defective EGR valve can cause issues with the EGR control circuit, leading to a shorted condition, Wiring Damage: Damage to the wiring connected to the EGR system can cause a short in the control circuit, Blown Fuse: A blown fuse in the EGR control circuit can disrupt the operation of the EGR valve. 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 GMC indicates Exhaust Gas Recirculation Control Circuit Shorted.
- Common causes
- Common causes include Faulty EGR Valve: A defective EGR valve can cause issues with the EGR control circuit, leading to a shorted condition, Wiring Damage: Damage to the wiring connected to the EGR system can cause a short in the control circuit, Blown Fuse: A blown fuse in the EGR control circuit can disrupt the operation of the EGR valve.
- 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 P1407 GMC Description
The P1407 diagnostic trouble code for GMC vehicles indicates a problem with the Exhaust Gas Recirculation (EGR) control circuit being shorted. The EGR system plays a crucial role in reducing harmful emissions by recirculating a portion of the exhaust gases back into the engine's intake manifold. This process helps lower combustion temperatures and reduce the formation of nitrogen oxides (NOx) emissions.
Common Causes of P1407 GMC
- Faulty EGR Valve: A defective EGR valve can cause issues with the EGR control circuit, leading to a shorted condition.
- Wiring Damage: Damage to the wiring connected to the EGR system can cause a short in the control circuit.
- Blown Fuse: A blown fuse in the EGR control circuit can disrupt the operation of the EGR valve.
- EGR Control Solenoid Failure: A malfunctioning EGR control solenoid can also trigger the P1407 code.
Symptoms of P1407 GMC
- Check Engine Light: The most common symptom associated with this code is the illumination of the Check Engine Light on the vehicle's dashboard.
- Reduced Fuel Efficiency: A malfunctioning EGR system can lead to decreased fuel efficiency due to improper recirculation of exhaust gases.
- Rough Idling: The engine may experience rough idling or surging as a result of the EGR control circuit short.
- Hesitation or Stalling: The vehicle may hesitate or stall during acceleration, especially at lower speeds.
- Increased Emissions: A malfunctioning EGR system can result in higher levels of harmful emissions being released into the environment.
How to Fix P1407 GMC
- Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble codes and pinpoint the exact cause of the shorted EGR control circuit.
- Inspect EGR Components: Check the EGR valve, wiring, and control solenoid for any signs of damage or malfunction.
- Replace Faulty Components: Replace any faulty EGR components, such as the EGR valve or control solenoid, and repair any damaged wiring.
- Clear Codes: Clear the diagnostic trouble codes from the vehicle's computer and test drive the vehicle to ensure the issue has been resolved.
- Perform Emissions Test: After repairs are completed, it is recommended to perform an emissions test to verify that the vehicle is operating within legal limits.
Cost to Fix P1407 GMC
The typical repair costs for addressing a P1407 code related to a shorted EGR control circuit can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the cost of parts for this repair can range from $100 to $300, while labor costs can range from $150 to $300. This brings the total estimated cost of the repair to around $250 to $600. However, it's important to note that these figures are approximate and can vary based on factors such as location, vehicle make and model, and the rates charged by individual auto repair shops. It is recommended to obtain quotes from several reputable shops to get a more accurate estimate for this repair.
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Information for Specific GMC Models
- P1407 2014 GMC Sierra — Exhaust Gas Recirculation Control Circuit Shorted
- P1407 2015 GMC Sierra — Exhaust Gas Recirculation Control Circuit Shorted
- P1407 2016 GMC Sierra — Exhaust Gas Recirculation Control Circuit Shorted
- P1407 2017 GMC Sierra — Exhaust Gas Recirculation Control Circuit Shorted
- P1407 2018 GMC Sierra — Exhaust Gas Recirculation Control Circuit Shorted
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