2014 Nissan Murano ECM: A Guide to Programming, Immobilizer Issues, and Replacement

Symptoms of a Failing 2014 Murano ECM

A faulty Engine Control Module can cause a wide range of issues, from minor annoyances to problems that prevent the vehicle from starting. Because the ECM controls so many different systems, symptoms can sometimes be mistaken for other component failures.

• Check Engine Light: This is the most common symptom. The ECM will trigger a Check Engine Light if it detects a fault within its own circuits or in the systems it monitors. Specific ECM-related codes include P0601, P0603, and P0605.
• Engine Stalling or No-Start: A failing ECM can disrupt the precise fuel and spark commands needed to run the engine. This can lead to the engine cranking but not starting, or stalling unexpectedly while driving.
• Poor Engine Performance: You might notice a loss of power, poor acceleration, rough idling, or engine misfires. This happens when the ECM can no longer accurately manage the air-fuel mixture or ignition timing.
• Decreased Fuel Economy: If the ECM makes incorrect adjustments to the fuel system, it can lead to a sudden and significant drop in gas mileage.
• Transmission Shifting Problems: The ECM communicates with the Transmission Control Module (TCM) to ensure smooth shifting. Faulty data from the ECM can cause hard shifts, delayed shifting, or other transmission irregularities.

CRITICAL: ECM Programming and Immobilizer Requirements

Replacing the ECM in a 2014 Nissan Murano is not a simple plug-and-play job. This is the most important factor to understand before purchasing a replacement module.

Since 2014, Nissan has supplied replacement ECMs as "blank" units that contain no software. These modules must be programmed with your vehicle's specific software and Vehicle Identification Number (VIN). This process syncs the new ECM with the other electronic modules in the car, including the ignition keys.

Who Can Program a Nissan ECM?

• Nissan Dealerships: Dealers have the proprietary CONSULT diagnostic tool required for this procedure.
• Qualified Independent Shops: Some high-end repair shops invest in professional-grade tools like a J2534 pass-thru device and a subscription to Nissan's diagnostic software, allowing them to perform the same programming.
🎬 Watch: Complete Nissan J2534 ECU programming tutorial
• Automotive Locksmiths: Many professional locksmiths have the equipment to program keys and modules for various brands, including Nissan.

DIY programming is not feasible for this vehicle without access to these expensive, specialized tools. Always factor the cost of professional programming into your total repair budget.

Known Issues, TSBs, and Recalls

While there are no specific recalls for the ECM on the 2014 Nissan Murano, several Technical Service Bulletins (TSBs) and a service campaign are relevant.

• TSB NTB12091A: This bulletin, issued in January 2014, officially announced that replacement ECMs for 2014 and newer Nissan vehicles would be supplied as "blank" units requiring programming.
• TSB NTB13-027C: This TSB provides a diagnostic flow chart for CAN (Controller Area Network) communication issues, which can sometimes be related to a faulty ECM.
• Voluntary Service Campaign P0A08 (NTB21-047): This campaign addresses an issue with the ABS actuator, where a reaction with DOT3 brake fluid could cause problems. While not an ECM issue, it involves the use of the Nissan CONSULT tool for diagnosis and is a known electronic system concern for this model year.
• Recall 17V184: A recall was issued for 2013-2014 Muranos for a power steering hose clamp that could detach, leading to a fluid leak and potential fire risk. This is unrelated to the ECM but is an important safety notice for the vehicle.

Buying a Used Engine Control Module for Your 2014 Murano

A used OEM ECM can be a reliable and cost-effective alternative to a new unit, provided you take the right precautions.

How to Verify Compatibility

• Match the Part Number: The most critical step is to match the OEM part number on the replacement module with the one on your original ECM. Known part numbers for the 2014 Murano include 237031SX5A, NEC003-690, and NEC003691. The part number is printed on the module's label. Do not rely on visual appearance alone.
• Inspect the Pins: Carefully inspect the connector pins on the used module. Look for any signs of corrosion, bending, or damage, which could indicate water intrusion or improper removal.
• Check for Case Damage: Avoid any modules with cracked cases or signs that they have been opened, as this could indicate a failed repair attempt.

Cost Comparison for a 2014 Murano ECM

Prices can vary significantly based on the source of the part and labor rates in your area. Programming costs are separate from the part and installation labor.

Frequently Asked Questions (FAQ)