Is your 2001 Chrysler Voyager, Dodge Caravan, or Town & Country experiencing frustrating and unpredictable issues? Problems like stalling, a persistent check engine light, or a complete no-start condition can often be traced back to a failing Engine Control Module (ECM). This vital component is the brain of your vehicle’s engine, and when it malfunctions, it can cause a cascade of problems that are difficult to diagnose. Restore your minivan’s reliability and performance with our pre-programmed, direct-fit replacement ECM, part number 04727402AJ.
From the Diagnostic Bay
We had a 2001 Dodge Caravan come into the shop that was giving its owner fits. It would randomly stall at stoplights and sometimes refuse to start for hours. The owner had already replaced the spark plugs, ignition coil, and even the fuel pump based on advice from various forums, but the problem persisted. After hooking up our scanner, we noticed intermittent communication loss with the engine module. We inspected the unit on the driver’s side fender and found no visible damage to the wiring. As a final diagnostic step, we connected this exact replacement ECM. The van fired up instantly, idled smoothly, and all communication errors vanished. It wasn’t a faulty sensor or fuel part; it was the computer itself slowly failing. This simple swap saved the customer from more guesswork and unnecessary expenses.
Common Symptoms of a Failing 2001 Voyager ECM
If you’re noticing any of the following issues with your 3.3L Flex Fuel minivan, a faulty engine computer is a very likely culprit. A failing ECM can manifest in various ways, but these are the most common signs we see in the shop:
- ✔ Check Engine Light: The light is on, and you may have codes related to module communication (like U-series codes) or multiple, unrelated sensor codes.
- ✔ No-Start or Hard Starting: The engine cranks but refuses to fire up, or it takes an unusually long time to start, especially when warm.
- ✔ Engine Stalling: The vehicle stalls unexpectedly while driving or when coming to a stop.
- ✔ Poor Performance & Fuel Economy: You may experience a noticeable loss of power, hesitation during acceleration, and a sudden drop in your miles per gallon (MPG).
- ✔ Rough or Unstable Idle: The engine idles erratically, surging up and down or feeling like it’s about to shut off.
- ✔ Transmission Shifting Problems: The ECM also communicates with the transmission controller, so a failing module can cause harsh shifting, delayed engagement, or getting stuck in a single gear (limp mode).
The Plug & Play Solution for Your Minivan
Replacing an ECM used to require a trip to the dealership for expensive and time-consuming programming. Our process eliminates that hassle completely. We take your vehicle’s unique Vehicle Identification Number (VIN) and current mileage and flash that data directly onto the module before it ships. This ensures that when you receive your 2001 Voyager ECM, it is a true plug-and-play installation. All factory anti-theft (SKIM) data and engine parameters are correctly configured, so your vehicle will accept the new module without any additional programming.
This unit is a direct replacement for a wide range of original part numbers, ensuring compatibility and a perfect fit. Installation is straightforward for a DIY mechanic with basic tools. The module is located on the driver’s side (LH) fender in the engine bay. Simply disconnect the battery, unplug the electrical connectors, unbolt the old unit, and install the new one in its place. Reconnect everything, and you’re ready to get back on the road.
This engine computer is a verified replacement for the following part numbers:
04727402AA 04727402AB 04727402AC 04727402AD 04727402AE 04727402AF 04727402AG 04727402AH 04727402AI 04727402AJ 04727402AK 05127669AA 05134993AA 05134993AB
It is specifically designed for these makes and models equipped with the 3.3L Flex Fuel Vehicle (FFV) engine:
CARAVAN 01 Electronic Control Module; (LH fender), 3.3L, flex fuel vehicle (FFV)
TOWN & COUNTRY 01 Electronic Control Module; (LH fender), 3.3L, w/flex fuel vehicle (FFV)
Frequently Asked Questions
Is this 2001 Voyager ECM really plug and play?
Absolutely. We program the unit with your vehicle’s specific VIN and mileage before shipping. This ensures it communicates perfectly with your minivan’s other systems right out of the box, with no need for a trip to the dealer.
What information do you need from me to program the module?
During the checkout process, we will ask for your 17-digit Vehicle Identification Number (VIN) and your vehicle’s current mileage. Please double-check this information for accuracy to ensure a flawless programming process.
Where is the ECM located on my 2001 Dodge Caravan?
The Electronic Control Module is located in the engine bay, mounted to the driver’s side (LH) inner fender, near the battery. It’s a silver metal box with three large electrical connectors.
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 part will resolve the issue. However, it’s crucial to ensure your vehicle has been properly diagnosed, as the light can also be triggered by faulty sensors or other components. This module will fix codes related to ECM failure and communication errors.
Do I need to send my old ECM (core) back?
This listing does not require a core return. You can keep or responsibly dispose of your old module without any additional charges or hassle.