2012 Chrysler 200 & Dodge Avenger ECM: Solving Stalls and No-Starts with the Right Module

Compatibility Warning: Read This First

Symptoms of a Failing ECM

When the ECM in a 2012 Chrysler 200 or Dodge Avenger begins to fail, it can cause a variety of confusing and often intermittent issues. Because the ECM controls so many functions, symptoms can be widespread. Diagnosis often involves ruling out simpler components like sensors or wiring first.

• Check Engine Light: This is the most common symptom. The light may be on constantly or come and go. Specific trouble codes related to internal module failure are a strong indicator.
• Engine Stalling or Misfiring: The engine may stall unexpectedly while driving, run very rough, or misfire. This can be dangerous, especially in traffic.
• Crank-No-Start: The engine turns over when you turn the key, but it will not fire up and run. This happens because the faulty ECM is not commanding the fuel injectors or ignition coils to work.
• Poor Performance and Fuel Economy: You might notice a sudden drop in gas mileage or a feeling that the car is sluggish and lacks power.
• Erratic Transmission Shifting: Since this module also controls the transmission, a failure can cause harsh shifts, getting stuck in one gear (limp mode), or other shifting problems.
• No Communication with Scan Tool: In some cases, the ECM may fail completely and will not be able to communicate with a diagnostic scan tool.

Common Diagnostic Trouble Codes (DTCs)

If you are able to connect a scan tool, the following codes are strong indicators of an internal ECM failure:

Buying a Used or Remanufactured ECM: What to Know

Buying a used or remanufactured ECM is a great way to save a significant amount of money compared to a new part from a dealer. However, you must follow these steps carefully to ensure you get a part that works.

Step 1: Confirm Compatibility

Before you buy, double-check that your vehicle is a 2012 Chrysler 200 or 2012 Dodge Avenger with the 2.4L engine and 4-speed automatic transmission. This information is usually on the emissions label under the hood or on the original window sticker.

Step 2: Match Your Part Number

The safest way to ensure compatibility is to match the part number from your original ECM. The module is located in the engine compartment, mounted to a bracket near the firewall. You will need to unplug and possibly unbolt it to see the sticker. Look for a number like 05150652AA or 68068444AE. While the last two letters can sometimes vary (as they often indicate software updates), the main hardware number should match.

Step 3: Plan for Programming (The Most Important Step)

A used ECM is not a simple plug-and-play part. It is electronically locked to the original car's VIN and anti-theft system (called the Sentry Key Immobilizer Module, or SKIM). You have two main paths to get a replacement working in your car:

1. Buy a Pre-Programmed ECM: Many online sellers offer remanufactured ECMs that are pre-programmed to your vehicle. You provide your car's VIN during checkout, and they flash the module before shipping it to you. This is the easiest and most direct solution for DIY repair, as the part arrives ready to install.
2. Buy a Used ECM and Have It Programmed: You can buy a used ECM with a matching part number and then have it programmed locally. This requires finding someone with the right tools to do the job.

Who Can Program a Chrysler ECM?

• The Dealership: A Chrysler/Dodge/Jeep dealer can always program a replacement ECM, but this is usually the most expensive option.
• Mobile Automotive Programmers: Many independent technicians and advanced locksmiths specialize in module programming and can perform this service at your home or their shop, often for less than the dealer.
• Online Sellers: As mentioned, this is often the simplest path. The programming is done before you even receive the part.

Known Issues, Recalls, and TSBs

While there are no active safety recalls specifically for the Engine Control Module on the 2012 Chrysler 200 and Dodge Avenger, there are a few related items to be aware of:

• Occupant Restraint Controller (ORC) Recalls: Several recalls (like NHTSA #17V640000 and #13V282000) were issued for the ORC, which controls the airbags and active headrests. The fix sometimes involved reprogramming a module, but this is separate from the main engine ECM.
• TSB 21-013-12: Chrysler released this Technical Service Bulletin for 2011-2014 models, which involved a software update for the PCM to improve transmission shifting. This confirms that updated software versions are available and can resolve certain drivability issues.

Replacement Overview

The physical replacement of the ECM is straightforward and can be done with basic hand tools.

1. Location: The ECM is located in the engine bay, typically on the driver's or passenger's side, mounted to a bracket near the firewall or shock tower.
2. Disconnect the Battery: Always disconnect the negative battery terminal before working on any electronic components.
3. Unplug Connectors: Carefully release the locking tabs and unplug the large wiring harness connectors from the ECM. Inspect them for any corrosion or damage.
4. Remove the Module: Unbolt the ECM from its mounting bracket.
5. Installation: Installation is the reverse of removal. Bolt the new module in place, plug in the connectors, and reconnect the battery. If you used a pre-programmed module, the car should now start and run correctly.

Cost of Replacement

The cost to replace the ECM in a 2012 Chrysler 200 or Dodge Avenger varies dramatically depending on the route you take.

Frequently Asked Questions (FAQ)