Is Your 2012 Liberty or Dodge 1500 Running Rough?
If you’re dealing with frustrating issues like stalling, no-start conditions, erratic shifting, or a persistent check engine light that just won’t go away, the root cause might be the very brain of your vehicle: the Engine Control Module (ECM). For owners of a 2012 Jeep Liberty or Dodge 1500 with the 3.7L V6 engine, a failing ECM can turn a reliable vehicle into a source of constant stress. Symptoms can start subtly—a slight hesitation or a dip in fuel economy—but can quickly escalate to leaving you stranded. Don’t keep throwing money at new sensors and parts hoping for a fix. This direct-replacement Engine Control Module, part number 05150631AB, is the definitive solution to restore your vehicle’s performance and reliability.
From the Diagnostic Bay
We had a 2012 Liberty come into the shop with a classic complaint: intermittent stalling at red lights and a check engine light for a random misfire that moved between cylinders. The owner had already replaced the spark plugs, ignition coils, and even the crankshaft position sensor based on advice from forums. The problem persisted. After hooking up our advanced scanner, we noticed the live data for fuel trim and injector pulse width was fluctuating wildly, with no mechanical cause. This pointed directly to the processor in the ECM. We installed one of our pre-programmed units, and the engine immediately smoothed out. The fuel trims stabilized, and the misfire codes vanished. It’s a textbook example of how a failing computer can mimic a dozen other problems, costing the owner time and money on unnecessary parts.
Symptoms of a Failing 2012 Liberty Engine Computer
- ✔ Check Engine Light: The light is on, and you may have communication error codes (like U-codes) or multiple, seemingly unrelated sensor codes.
- ✔ No-Start or Hard Starting: The engine cranks but refuses to start, or takes an unusually long time to fire up, especially when warm.
- ✔ Poor Engine Performance: Noticeable loss of power, hesitation during acceleration, and rough idling are common signs.
- ✔ Reduced Fuel Economy: If you’re suddenly making more trips to the gas station, a faulty ECM could be commanding incorrect fuel mixtures.
- ✔ Stalling: The engine may stall unexpectedly while driving or when coming to a stop.
- ✔ Transmission Issues: The ECM works with the transmission controller, so a failing unit can cause harsh shifting, or the transmission may get stuck in a single gear (limp mode).
The Plug-and-Play Solution
The biggest hurdle in replacing an engine computer has always been the expensive and time-consuming programming required at a dealership. We eliminate that completely. This module is not just a part; it’s a complete solution. When you place your order, we will flash the unit with your vehicle’s specific Vehicle Identification Number (VIN) and current mileage. This ensures that when it arrives, it’s ready for immediate installation. There are no extra trips to a mechanic, no special tools needed for programming, and no hidden fees. It will seamlessly integrate with your vehicle’s existing systems, including the anti-theft immobilizer, as if it came from the factory floor.
This unit is a direct replacement for a wide range of original part numbers, ensuring broad compatibility for your 2012 3.7L engine. Compatible part numbers include: 6810707AD, 05150631AB, 68103707, 68087057AA, 68154700AA, 68093208AC, 05094522, 05094521, 68065902, 68065901, 68103710, 68103708, 68103709 and more. By purchasing this pre-programmed 2012 Liberty Engine Computer, you are getting a reliable, cost-effective fix that puts you back in control of your vehicle’s health.
Frequently Asked Questions
Is this engine computer truly “Plug and Play”?
Yes, absolutely. We program the module with your vehicle’s VIN and mileage before shipping. This means it will be ready to install and start the vehicle right out of the box, with no additional programming or dealer visits required.
Where is the ECM located on a 2012 Jeep Liberty?
On the 2012 Jeep Liberty, the Electronic Control Module (ECM) is typically located in the engine compartment on the driver’s side (LH side), often near the firewall or inner fender.
How do I provide my VIN and mileage for programming?
After you place your order, you will be prompted to provide your vehicle’s information. Please ensure you enter the 17-digit VIN and current mileage accurately to ensure perfect programming.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM, then yes, this part will resolve the issue. However, it’s crucial to ensure the underlying problem isn’t a separate faulty sensor or wiring issue. This module will fix codes related to internal processor failure and communication errors.
Do I need any special tools for installation?
Basic hand tools, such as a socket set, are all that’s typically required to physically swap the module. The most important part of the installation is to disconnect the vehicle’s battery before you begin to prevent any electrical damage.
Is this compatible with my 2012 Dodge 1500 Pickup?
Yes, this engine computer is fully compatible with the 2012 Dodge 1500 Pickup equipped with the 3.7L V6 engine, as well as the 2012 Jeep Liberty with the same engine.