2015 Jeep Cherokee & Chrysler 200 ECM: Stalling, No-Start, and Programming Guide

Symptoms of a Failing ECM

A failing Engine Control Module can cause a wide range of confusing and intermittent issues. Because the ECM controls so many different systems, symptoms can often be mistaken for other problems. Pay close attention if you experience several of these issues together.

• Check Engine Light: An illuminated Check Engine Light is one of the most common signs. Codes may point to internal processor failure (like P0601 or P0606) or show multiple, seemingly unrelated sensor or circuit faults.
• Engine Stalling or Misfiring: The engine may stall unexpectedly, either at idle or while driving. You might also experience a rough idle, hesitation during acceleration, or noticeable engine misfires.
• No-Start Condition: The engine may crank but fail to start. This can happen if the ECM isn't sending the correct signals to the fuel pump or ignition coils. This can be intermittent at first.
🎬 Watch a mobile mechanic diagnose a 200 no-start condition.
• Poor Performance and Fuel Economy: A noticeable drop in gas mileage, sluggish acceleration, or a general lack of power can be caused by the ECM failing to properly manage the air-fuel mixture and ignition timing.
• Erratic Transmission Shifting: Since the ECM also controls the 9-speed automatic transmission in these vehicles, a faulty module can cause harsh shifting, delayed shifts, or getting stuck in one gear (limp mode).
• Communication Errors: A diagnostic scan tool may be unable to communicate with the ECM, which is a strong indicator that the module itself has failed.

Known Issues, Recalls, and Technical Service Bulletins (TSBs)

Several factory communications are relevant to the engine control systems on the 2015 Jeep Cherokee and Chrysler 200. Some issues can mimic ECM failure, so it's important to rule them out first.

Vehicle-Specific Recalls

• Chrysler Recall U59 / NHTSA 18V-332: Affects some 2015-2017 Chrysler 200 models with adaptive cruise control. The ECM software had a flaw that could prevent the vehicle from slowing down when cruise control was disengaged. The fix is a simple software reprogram at a dealership.
• Chrysler Recall R24 / NHTSA 15V470000: This recall addresses a faulty electrical connector in the Power Distribution Center (PDC) on some 2015 Chrysler 200s, which can cause intermittent power loss and stalling. These symptoms are nearly identical to ECM failure and should be investigated first.
• Chrysler/Jeep Recall S55 / NHTSA 16V-529: This campaign affects both the 2015 Cherokee and 200 equipped with the 9-speed automatic transmission. Insufficient wire harness crimps could cause the transmission to unexpectedly shift into neutral. This is a wiring issue, not an ECM failure, but results in a loss of power to the wheels.

Diagnosis and Replacement

Diagnosing a bad ECM should be a process of elimination. First, a technician should verify that all power and ground connections to the ECM are good and that all related fuses are intact. The wiring harness and connectors should be inspected for damage or corrosion. If all other potential causes (sensors, wiring, other modules) have been ruled out, the ECM is the likely culprit.

ECM Location

• 2015 Jeep Cherokee: The ECM is located in the engine bay on the driver's side, mounted to the chassis near the air filter housing and main fuse box. It is a silver metal box held by three 10mm bolts and has three large electrical connectors.
🎬 See this walkthrough of a Jeep Cherokee ECU replacement.
• 2015 Chrysler 200: The ECM is found in the engine bay on the passenger's side, near the battery and firewall. It is also a silver metal box with large connectors.

Buying a Used Engine Control Module

For a vehicle of this age, a used OEM ECM is often the most cost-effective solution. However, there are critical factors to consider to ensure a successful repair.

1. Match the Part Number EXACTLY

This is the most important step. While many modules look identical, they contain different hardware and software for different engines (2.4L I4 vs. 3.2L/3.6L V6), emissions standards, and vehicle options. The only way to ensure compatibility is to match the OEM part number from your original module. The part number is printed on a white sticker on the ECM's case. Common hardware numbers include 05150925AA or 05150925AB for V6 models and 05150993AC for 2.4L models, but the specific full part number must match.

2. VIN Programming is REQUIRED

A used ECM will not work if you simply plug it in. It contains the Vehicle Identification Number (VIN) and security information from the donor vehicle. The replacement module MUST be programmed with your vehicle's VIN. Many online sellers offer this as a service before shipping the part. You will need to provide your VIN at the time of purchase.

3. A "Proxi Alignment" Will Be Necessary

Because these vehicles are built on a Fiat-Chrysler architecture, simply programming the VIN is not enough. After the new ECM is installed, a Proxi Alignment (or Proxy Configuration) procedure must be performed. This procedure syncs all the vehicle's control modules (Body Control Module, ABS, etc.) with the new ECM.

• What happens if you don't do it? The most common symptom is a flashing odometer. The car may start and run for a few seconds then stall, or have other persistent electronic glitches.
🎬 Watch this to understand why your mileage is flashing.
• Who can perform a Proxi Alignment? A Chrysler/Jeep dealer using their wiTECH scan tool can do it. Many independent shops with high-end professional scan tools (like Autel, Snap-on) or specialized software (like AlfaOBD or Appcar DiagFCA) can also perform this function. This is not something a basic OBD-II code reader can do.

4. Physical Inspection

When your used part arrives, inspect it for physical damage. Check for corrosion on the pins of the electrical connectors, dents in the casing, or broken mounting tabs. Do not install a module that shows signs of water or physical damage.

Frequently Asked Questions (FAQ)