P049D 2014 GMC Sierra Code - Exhaust Gas Recirculation Position Not Learned
Quick Answer
The P049D diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates that the Exhaust Gas Recirculation (EGR) position has not been learned by the engine control module (ECM). Common causes include Faulty EGR valve, Malfunctioning EGR position sensor, Wiring issues. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P049D 2014 GMC Sierra indicates Exhaust Gas Recirculation Position Not Learned.
- Common causes
- Common causes include Faulty EGR valve, Malfunctioning EGR position sensor, Wiring issues.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P049D 2014 GMC Sierra Description
The P049D diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates that the Exhaust Gas Recirculation (EGR) position has not been learned by the engine control module (ECM). The EGR system is responsible for recirculating a portion of the exhaust gases back into the intake manifold to reduce nitrogen oxide emissions. When the EGR position is not learned, it means that the ECM is unable to accurately control the EGR valve's operation, leading to potential performance issues and increased emissions.
Common Causes of P049D 2014 GMC Sierra
- Faulty EGR valve
- Malfunctioning EGR position sensor
- Wiring issues
- ECM malfunction
Symptoms of P049D 2014 GMC Sierra
- Rough idling
- Decreased fuel efficiency
- Engine stalling
- Check engine light illuminated
How to Fix P049D 2014 GMC Sierra
- Begin by using a scan tool to clear the DTC and reset the ECM.
- Inspect the EGR valve and position sensor for any signs of damage or malfunction.
- Test the wiring connections to ensure there are no loose or damaged wires.
- If necessary, replace the EGR valve or position sensor with a new, OEM part.
- After the repair is completed, perform a relearn procedure to allow the ECM to learn the EGR position correctly.
Cost to Fix P049D 2014 GMC Sierra
The typical repair costs for addressing a P049D code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. Generally, the cost of replacing an EGR valve or position sensor can range from $200 to $500, including parts and labor. However, additional diagnostic time and labor rates at auto repair shops can impact the final cost. It is advisable to check with local shops for a more accurate estimate based on your location and vehicle specifics.
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