Is Your 2003 Chrysler Concorde Running Rough?
The Engine Control Module (ECM), often called the engine computer, is the electronic brain of your 2003 Chrysler Concorde 3.5L engine. It manages everything from fuel injection and ignition timing to transmission shift points and emissions controls. When this critical component begins to fail, it can cause a wide range of frustrating and often difficult-to-diagnose problems. You might be experiencing intermittent stalling, poor fuel economy, a check engine light that won’t go away, or even a no-start condition that leaves you stranded. Don’t let a faulty computer dictate your vehicle’s reliability. This direct-replacement ECM is the definitive solution to restore your vehicle’s performance and peace of mind.
From the Diagnostic Bay
We had a 2003 Chrysler 300M, which shares the same platform as the Concorde, come into the shop with a persistent random misfire on cylinder 3 (P0303). The owner had already spent a small fortune replacing the spark plug, ignition coil, and fuel injector for that cylinder, but the problem remained. After hooking up our diagnostic scanner and monitoring live data, we noticed the injector pulse width for cylinder 3 was erratic. A quick check of the wiring confirmed it was intact. The culprit? A failing injector driver inside the original ECM. It wasn’t providing a consistent signal to the new injector. We installed one of our pre-programmed modules, and the car ran perfectly smooth instantly. It’s a classic case where the problem isn’t the components, but the computer controlling them.
Common Symptoms of a Failing 2003 Concorde ECM
If you’re experiencing any of the following issues, a failing engine computer could be the root cause. A faulty ECM can often mimic other sensor or component failures, making diagnosis tricky. Here are the most common warning signs for the Chrysler LH platform:
- ✔ Check Engine Light (CEL) is on with various trouble codes, especially those related to internal module failure (e.g., P0601, P0606) or sensor circuits.
- ✔ Engine stalls unexpectedly while driving or at idle.
- ✔ Vehicle refuses to start, but the battery and starter are good.
- ✔ Noticeable decrease in fuel economy.
- ✔ Rough idling, engine hesitation, or misfires.
- ✔ Automatic transmission shifts harshly or at the wrong times.
- ✔ Loss of communication with the ECM when using a diagnostic scan tool.
- ✔ Issues with other electronic systems, as the ECM communicates with multiple modules.
The Plug-and-Play Solution
Forget about expensive dealership visits, towing fees, and the hassle of programming a new module. This ECM is delivered to your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN) and current mileage. This ensures that all factory settings, including anti-theft (SKIM) data, are correctly configured. The process is simple: you provide us with your VIN during checkout, and we handle the complex programming. When the part arrives, you simply disconnect the battery, swap the modules, and reconnect the battery. No special tools or additional programming are required. It’s a true plug-and-play installation.
This module is a direct replacement for a wide range of part numbers, ensuring perfect compatibility. It is meticulously tested to meet or exceed original equipment standards for performance and durability. This isn’t just a replacement part; it’s a long-term solution for the electronic health of your vehicle.
Guaranteed Fitment For:
- 2003 Chrysler Concorde (Electronic Control Module; LH front engine compartment, 3.5L, Limited, VIN G, ID 4896722)
- 2003 Dodge Intrepid (Electronic Control Module; LH front engine compartment, 3.5L, VIN G, ID 4896722)
- 2003 Chrysler 300M (Electronic Control Module; LH front engine compartment, exc. Special, ID 4896722)
This part is a direct replacement for the following part numbers: 04896501AB, 04896501AC, 04896501AD, 04896501AE, 04896722AA, 04896722AB, 04896722AC, 04896722AD, 04896722AE, 04896722AF, 04896722AG, 05114082AA.
Frequently Asked Questions
Is this ECM really plug-and-play?
Absolutely. We use the VIN you provide at checkout to program the module with your vehicle’s specific software and security information. This means when you receive it, it’s ready for installation without any need for a trip to the dealership for further programming.
Where is the ECM located on my 2003 Concorde?
The ECM is located in the engine compartment on the driver’s side (LH side), near the front of the vehicle. It is typically mounted near the fender or firewall and has several large electrical connectors attached to it.
What information do you need from me?
All we need is your vehicle’s 17-digit Vehicle Identification Number (VIN). You can typically find this on your driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the original ECM, then yes, this replacement part will resolve the issue. However, it’s crucial to ensure that the diagnostic trouble codes are not being caused by a faulty sensor or wiring problem elsewhere in the vehicle. We always recommend a proper diagnosis before ordering.
Do I need to send my old ECM back (core charge)?
Please check the specific terms of this listing. Many of our modules do not require a core return, allowing you to get your vehicle repaired without the hassle of shipping your old part back.