P0405 2016 Chevrolet Silverado Code - Exhaust Gas Recirculation Position Sensor Circuit Low Voltage
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
- P0405 2016 Chevrolet Silverado indicates Exhaust Gas Recirculation Position Sensor Circuit Low Voltage.
- 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 P0405 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0405 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 P0405 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 P0405 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 P0405 2016 Chevrolet Silverado Code
1. What does the OBDII code P0405 mean on a 2016 Chevrolet Silverado?
P0405 indicates that the Exhaust Gas Recirculation (EGR) position sensor is reporting a voltage level lower than expected by the powertrain control module (PCM).
2. What are the common symptoms of code P0405 on a Chevy Silverado?
Symptoms may include the check engine light turning on, reduced engine performance, rough idle, poor fuel economy, and increased emissions.
3. What causes the P0405 code on a 2016 Chevrolet Silverado?
Common causes include a faulty EGR position sensor, damaged wiring or connectors in the EGR circuit, carbon buildup in the EGR valve, or a malfunctioning EGR valve.
4. Can I drive my 2016 Silverado with P0405 code active?
While the vehicle may still be drivable, it could experience reduced performance and higher emissions. Prolonged driving without addressing the issue may cause further damage.
5. How do I diagnose the P0405 code on my Chevy Silverado?
Start by inspecting the EGR valve and position sensor for damage, checking the wiring and connectors for shorts or corrosion, and testing the voltage and resistance of the EGR position sensor using a multimeter.
6. How can I fix code P0405 on my 2016 Chevrolet Silverado?
Repairs may include cleaning or replacing the EGR valve, repairing or replacing damaged wiring or connectors, and replacing the EGR position sensor if it’s faulty.
7. How much does it cost to fix the P0405 code on a Chevy Silverado?
Repair costs can vary. Replacing an EGR position sensor typically ranges from $100 to $300, depending on labor and parts costs.
8. Can a clogged EGR valve trigger the P0405 code?
Yes, carbon buildup in the EGR valve can restrict movement and cause incorrect sensor readings, leading to the P0405 code.
9. Is the P0405 code covered under warranty for a 2016 Chevrolet Silverado?
It depends on the warranty coverage. If the vehicle is still under powertrain or emissions warranty, the repair may be covered. Check with your dealer for details.
10. What tools do I need to fix the P0405 code on my Silverado?
Basic tools include a multimeter for testing voltage, a scanner to clear codes, and standard hand tools for accessing the EGR system.
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