P1406 GMC Code - EGR Valve Pintle Position Circuit
Quick Answer
The Powertrain Control Module (PCM) determines that the EGR valve is stuck open if the actual Exhaust Gas Recirculation (EGR) position and the learned closed EGR position vary by more than a predetermined value. Common causes include Faulty Exhaust Gas Recirculation (EGR) valve, Carbon blockage of the pintle. 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
- P1406 GMC indicates EGR Valve Pintle Position Circuit.
- Common causes
- Common causes include Faulty Exhaust Gas Recirculation (EGR) valve, Carbon blockage of the pintle.
- 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 P1406 GMC Description
What are the Possible Causes of the DTC P1406 GMC?
- Faulty Exhaust Gas Recirculation (EGR) valve
- Carbon blockage of the pintle
How to Fix the DTC P1406 GMC?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1406 GMC 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.
Need more information about the P1406 GMC code?
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Need Help with the Code?
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Frequently Asked Questions about P1406 GMC Code
No Frequently Asked Questions about P1406 GMC Code found.
Discuss the causes and fixes for P1406 GMC OBDII Code
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Replaced the EGR valve. I had code P 1406. But it still will not start it kind of backfires and I can smell fuel I can hear the fuel pump running. It ask like it's going to start but it won't. I have also replaced the crank sensor.
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Unless the EGR valve is open, I doubt the problem with the EGR is causing the no start situation. Try disconnecting the EGR valve to see if that makes any difference. Do you have spark at the spark plugs?
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It's trying to start sometimes it just pops. Or if runs for a short time maybe hitting on a few cylinders
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