P0404 on Jeep
Exhaust Gas Recirculation Circuit Range/Performance
P0404 on Jeep vehicles indicates exhaust gas recirculation circuit range/performance. Au7o has documented this code across 3 Jeep models — most commonly on Commander, Gladiator, Wagoneer. 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 Jeep range from $50 to $2,500, 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 Jeep by Model
Jeep Commander(1 issue)
- Random Electrical Failures / Dashboard Warning Lights2006-2010
The Commander is plagued by random electrical issues where dashboard warning lights illuminate and extinguish without cause, the HVAC system shuts off randomly, and various accessories behave erratically. This can occur 1-15 times per day while driving or parked. The issues are often traced to corroded ground connections, a failing TIPM (Totally Integrated Power Module), or wiring harness degradation.
Jeep Gladiator(1 issue)
- Death Wobble / Steering Shimmy2020-2025
The solid front axle design on the Gladiator is susceptible to "death wobble," a violent shaking of the front end typically triggered by hitting a bump at highway speeds. NHTSA received over 170 steering complaints for the 2020 model year alone. Contributing factors include worn ball joints, loose track bar bolts, and degraded steering stabilizer. Recall 21V-853 addressed lower ball joints on vehicles built between 9/16/2020 and 8/4/2021.
Jeep Wagoneer(1 issue)
- 5.7L eTorque Engine Stalling at Low Speeds2022-2025
The 5.7L HEMI V8 with eTorque mild-hybrid system can stall at slow speeds, causing the vehicle to unexpectedly shift into park and apply the emergency brake. NHTSA opened a formal investigation after at least 80 owner complaints. The 48V eTorque motor-generator unit and its integration with the transmission control system appear to be the root cause. Some owners report the vehicle cannot be restarted after stalling.
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View P0404 across all makes →Frequently Asked Questions
What does P0404 mean on Jeep?▼
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 Jeep specifically, this code is documented across 3 models.
What causes P0404 on Jeep vehicles?▼
Common causes on Jeep: 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 Jeep?▼
Repair costs on Jeep range from $50 to $2,500, depending on the specific model and root cause.
Which Jeep models have P0404 documented?▼
Au7o has documented P0404 on 3 Jeep models: Commander, Gladiator, Wagoneer.