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Home/DTC Codes/Chevrolet/Impala/2016-2016 3.6L V6 LFX/P1406
P1406

EGR Valve Pintle Position Circuit

2016-2016 Chevrolet Impala 3.6L V6 LFX 🇬🇧

Moderate SeverityPowertrain

Description

The PCM detected that the EGR valve pintle position sensor voltage is outside the expected range. The position sensor provides feedback to the PCM about the actual EGR valve opening.

Symptoms

  • Check Engine Light
  • Rough idle
  • Poor acceleration
  • Increased emissions
  • Stalling

Common Causes

  • Faulty EGR valve position sensor
  • Carbon buildup affecting valve movement
  • Wiring damage to position sensor
  • Corroded connector
  • EGR valve mechanically binding

Diagnostic Steps

  1. Test EGR position sensor voltage at rest and during operation
  2. Command EGR open/closed with scan tool and monitor position
  3. Inspect EGR valve for carbon buildup
  4. Check wiring and connector for damage

Repair Notes

Clean or replace EGR valve. Check position sensor wiring.

Related Codes

P0400Exhaust Gas Recirculation (EGR) FlowP0401EGR Flow Insufficient DetectedP0404EGR Control Circuit Range/PerformanceP1404EGR Valve Pintle Position Closed PerformanceP1404EGR Valve Pintle Position Closed PerformanceP1404EGR Valve Pintle Position Closed PerformanceP1404EGR Valve Pintle Position Closed PerformanceP1404EGR Valve Pintle Position Closed PerformanceP1404EGR Valve Pintle Position Closed PerformanceP1404EGR Valve Pintle Position Closed PerformanceP1404EGR Valve Pintle Position Closed Performance

Other Powertrain Codes

P1406 on Other Vehicles

Chevrolet Astro

1996-1996 4.3L V6 Vortec

Chevrolet Astro

1997-1997 4.3L V6 Vortec

Chevrolet Astro

1998-1998 4.3L V6 Vortec

Chevrolet Astro

1999-1999 4.3L V6 Vortec

Chevrolet Astro

2000-2000 4.3L V6 Vortec

Chevrolet Astro

2001-2001 4.3L V6 Vortec

Chevrolet Astro

2002-2002 4.3L V6 Vortec

Chevrolet Astro

2003-2003 4.3L V6 Vortec

Common Questions

What does code P1406 mean on a 2016-2016 Chevrolet Impala?

P1406 stands for "EGR Valve Pintle Position Circuit". The PCM detected that the EGR valve pintle position sensor voltage is outside the expected range. The position sensor provides feedback to the PCM about the actual EGR valve opening.

What are the symptoms of P1406 on a Chevrolet Impala?

Common symptoms of P1406 include: Check Engine Light, Rough idle, Poor acceleration, Increased emissions, Stalling.

What causes P1406 on a 2016-2016 Chevrolet Impala?

Common causes of P1406 include: Faulty EGR valve position sensor, Carbon buildup affecting valve movement, Wiring damage to position sensor, Corroded connector, EGR valve mechanically binding.

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