EGR Valve Pintle Position Closed Performance
2012-2018 Chevrolet Aveo 1.6L I4
Description
The PCM detected that the EGR valve is not fully closing when commanded closed. The EGR valve position sensor voltage remains above 0.29V when the valve should be closed. This code is most commonly caused by carbon buildup on the EGR valve pintle that prevents full closure. Over time, the original learned closed-position signal drifts as the position sensor wears.
Symptoms
- Check Engine Light
- Rough or erratic idle
- Engine knocking or pinging on acceleration
- Black smoke from tailpipe
- Reduced fuel economy
- Hard starting
- Engine stalling
Common Causes
- Carbon buildup on EGR valve pintle (most common)
- Worn EGR valve position sensor
- EGR valve mechanically stuck open
- Damaged EGR valve wiring
- Excessive wear of EGR valve internals
- PCM failure (rare)
Diagnostic Steps
- Monitor EGR valve position voltage with scan tool when commanded closed (should be below 0.29V)
- Remove and inspect EGR valve for carbon deposits
- Clean EGR valve pintle and seat
- Test EGR position sensor through range of motion
- Check wiring and connector
Repair Notes
Remove and clean EGR valve of carbon deposits. If cleaning does not resolve, replace EGR valve assembly. The EGR position sensor is often integrated into the valve.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1404 on Other Vehicles
Chevrolet Astro
1995-2005 4.3L V6 Vortec
Chevrolet Avalanche
2002-2006 5.3L V8 Vortec
Chevrolet Avalanche
2002-2006 8.1L V8 Vortec
Chevrolet Avalanche
2007-2013 5.3L V8 Vortec
Chevrolet Avalanche
2007-2013 6.0L V8 Vortec
Chevrolet Beat
2018-2021 1.2L I4
Chevrolet Beretta
1990-1996 2.2L I4
Chevrolet Beretta
1990-1996 2.3L I4 Quad 4
Common Questions
What does code P1404 mean on a 2012-2018 Chevrolet Aveo?
P1404 stands for "EGR Valve Pintle Position Closed Performance". The PCM detected that the EGR valve is not fully closing when commanded closed. The EGR valve position sensor voltage remains above 0.29V when the valve should be closed. This code is most commonly caused by carbon buildup on the EGR valve pintle that prevents full closure. Over time, the original learned closed-position signal drifts as the position sensor wears.
What are the symptoms of P1404 on a Chevrolet Aveo?
Common symptoms of P1404 include: Check Engine Light, Rough or erratic idle, Engine knocking or pinging on acceleration, Black smoke from tailpipe, Reduced fuel economy, Hard starting, Engine stalling.
What causes P1404 on a 2012-2018 Chevrolet Aveo?
Common causes of P1404 include: Carbon buildup on EGR valve pintle (most common), Worn EGR valve position sensor, EGR valve mechanically stuck open, Damaged EGR valve wiring, Excessive wear of EGR valve internals, PCM failure (rare).