P0404 on Nissan
Exhaust Gas Recirculation Circuit Range/Performance
P0404 on Nissan vehicles indicates exhaust gas recirculation circuit range/performance. Au7o has documented this code across 4 Nissan models — most commonly on 370Z, Leaf, Pathfinder. This code means the exhaust gas recirculation (EGR) system isn't performing within its expected range. The EGR valve routes a metered amount of exhaust gas back into the intake to lower combustion temperatures and reduce nitrogen-oxide emissions, and the computer monitors the valve's actual position versus what it commanded. When the valve sticks, moves incorrectly, or the feedback doesn't match the command, P0404 sets. This can cause rough idle, hesitation, pinging, and increased emissions. Typical repair costs on Nissan range from $200 to $8,000, depending on the specific model and root cause.
Common Causes of P0404
- •Carbon buildup clogging the EGR valve or passages
- •Sticking or failed EGR valve
- •Faulty EGR position sensor
- •Corroded or loose EGR connector
- •Damaged or shorted EGR wiring
- •Vacuum leak or failed vacuum control (on vacuum-operated systems)
- •Clogged EGR cooler or tubes
- •Faulty PCM/ECM (rare)
P0404 on Nissan by Model
Nissan 370Z(1 issue)
- Concentric Slave Cylinder (CSC) Failure2009-2020
The 370Z is notorious for concentric slave cylinder failures, which is integrated with the clutch release bearing inside the transmission bell housing. When it fails, the clutch cannot be disengaged. This requires transmission removal to replace, making it a costly repair.
Nissan Leaf(1 issue)
- Battery Pack Capacity Degradation2011-2023
The Nissan Leaf uses an air-cooled lithium-ion battery that degrades faster than liquid-cooled competitors. Hot climates (Arizona, Texas) accelerate degradation significantly. Early models (2011-2015) with 24 kWh packs can lose 30-40% capacity within 5-7 years. Nissan provides an 8-year/100,000-mile battery warranty covering loss below 9 bars (approximately 66% capacity) on the dashboard gauge.
Nissan Pathfinder(1 issue)
- Coolant Leak from Thermostat Housing (VQ35DE)2013-2020
The 2013-2020 Pathfinder VQ35DE engine develops coolant leaks from the thermostat housing/water outlet, typically around 60,000-100,000 miles. The plastic housing cracks or the O-ring seal degrades, causing a slow coolant leak that can lead to overheating if not addressed. This is a common issue shared with the Murano and Maxima VQ35 engines.
Nissan Sentra(1 issue)
- A/C Compressor Failure2013-2019
The A/C compressor on 2013-2019 Sentra models is known to fail prematurely, often within 60,000-80,000 miles. The compressor clutch bearings seize or the internal components disintegrate, sending metal debris throughout the A/C system. When the compressor fails internally, the entire system often needs flushing.
Looking for P0404 on a different make?
View P0404 across all makes →Frequently Asked Questions
What does P0404 mean on Nissan?▼
P0404 stands for "Exhaust Gas Recirculation Circuit Range/Performance." This code means the exhaust gas recirculation (EGR) system isn't performing within its expected range. The EGR valve routes a metered amount of exhaust gas back into the intake to lower combustion temperatures and reduce nitrogen-oxide emissions, and the computer monitors the valve's actual position versus what it commanded. When the valve sticks, moves incorrectly, or the feedback doesn't match the command, P0404 sets. This can cause rough idle, hesitation, pinging, and increased emissions. On Nissan specifically, this code is documented across 4 models.
What causes P0404 on Nissan vehicles?▼
Common causes on Nissan: Carbon buildup clogging the EGR valve or passages, Sticking or failed EGR valve, Faulty EGR position sensor, Corroded or loose EGR connector, Damaged or shorted EGR wiring. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0404 on a Nissan?▼
Repair costs on Nissan range from $200 to $8,000, depending on the specific model and root cause.
Which Nissan models have P0404 documented?▼
Au7o has documented P0404 on 4 Nissan models: 370Z, Leaf, Pathfinder, Sentra.