P2004 on Chrysler: How to Diagnose & Fix
Intake Manifold Runner Control Stuck Open (Bank 1)
1 Chrysler model · 1 documented issue · $150-$400 repair
P2004 on Chrysler by model: symptoms, diagnosis and fix
The 3.5L V6 manifold tuning valve (MTV) actuator fails, causing a loss of low-end torque and a check engine light. The MTV opens and closes a passage between the split intake plenums to change the effective plenum volume across the RPM range.
Common Symptoms
- Check engine light
- Reduced low-end power
- Slight decrease in fuel economy
- Rattling from intake area
How to Fix
Replace the manifold tuning valve actuator. If the MTV is leaking where it bolts to the upper plenum, replacing its O-ring may be enough before replacing the valve.
Sources for this issue (3)
P2004 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P2004 mean on a Chrysler?
P2004 stands for "Intake Manifold Runner Control Stuck Open (Bank 1)." P2004 means the intake manifold runner control for engine bank 1 is stuck in the open position. Many engines use flaps or valves inside the intake manifold that close at low RPM to boost air velocity and torque, then open at higher RPM; this code sets when the computer commands those runners to close but a sensor shows they remain open. The result is usually rough low-speed running, reduced low-end power, or hesitation. It indicates a mechanical or actuator problem in the variable intake system, not a true vacuum or fuel issue. On Chrysler it is documented across 1 model: LHS.
What are the most common causes of P2004?
The most common causes of P2004 are: Stuck or seized intake manifold runner flaps (carbon buildup), Failed intake manifold runner control actuator or solenoid, Disconnected or broken actuator linkage/rod, Faulty intake runner position sensor, Damaged wiring or connector at the actuator/sensor, Vacuum leak or failed vacuum supply on vacuum-operated systems, Cracked or warped intake manifold. The specific cause varies by vehicle.
How much does it cost to fix P2004 on a Chrysler?
Published repair estimates on Chrysler range from $150 to $400 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P2004 on a different make?
View P2004 across all makes →Join 700+ subscribers following Au7o for vehicle insights and updates.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.