P0404 2016 Chevrolet Silverado Code - Exhaust Gas Recirculation Open Position Performance
Quick Answer
The Engine Control Module (ECM) uses the Exhaust Gas Recirculation (EGR) position sensor to determine the position of the EGR valve. 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
- P0404 2016 Chevrolet Silverado indicates Exhaust Gas Recirculation Open Position Performance.
- 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.
Code P0404 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0404 2016 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 P0404 2016 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 P0404 2016 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.
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Frequently Asked Questions about P0404 2016 Chevrolet Silverado Code
What does the OBDII code P0404 mean for a 2016 Chevrolet Silverado?
P0404 indicates an issue with the Exhaust Gas Recirculation (EGR) system, specifically an unexpected or out-of-range EGR valve position.
What are common symptoms of the P0404 code on a 2016 Chevrolet Silverado?
Symptoms may include reduced engine performance, rough idling, increased emissions, poor fuel economy, and the check engine light turning on.
What causes the P0404 code to appear on a 2016 Chevrolet Silverado?
Common causes include a malfunctioning EGR valve, carbon buildup in the EGR passages, faulty wiring or connectors, or issues with the EGR position sensor.
Can driving with the P0404 code damage my 2016 Chevrolet Silverado?
Driving with the P0404 code can lead to reduced performance and increased emissions. Long-term neglect may cause further damage to the EGR system or engine.
How do I fix the P0404 code on a 2016 Chevrolet Silverado?
You may need to clean or replace the EGR valve, inspect and repair wiring or connectors, or replace the EGR position sensor if faulty.
How can I clean an EGR valve to fix the P0404 code?
Remove the EGR valve and clean it using a carburetor cleaner or similar solvent to remove carbon buildup. Ensure the passages are also clear.
What tools are needed to repair the P0404 code on a 2016 Chevrolet Silverado?
Basic tools like a socket set, screwdrivers, and possibly a multimeter for electrical testing are needed. A scan tool or OBDII reader is essential for diagnostics.
Is the P0404 code a common issue on the 2016 Chevrolet Silverado?
While not extremely common, issues with the EGR system can occur due to carbon buildup or wear and tear over time.
How much does it cost to repair the P0404 code on a 2016 Chevrolet Silverado?
Repair costs vary but typically range from $150 to $400, depending on whether cleaning or replacing the EGR valve or other components is necessary.
Can a faulty EGR valve cause the P0404 code?
Yes, a malfunctioning EGR valve is one of the most common causes of the P0404 code. It may fail due to wear or carbon buildup.
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