2012 Nissan Murano ECM: Programming, Part Numbers, and Replacement Facts
Replacing the Engine Control Module on a 2012 Murano is more complex than just swapping parts; it requires mandatory programming and careful part matching.
- ECM replacement requires mandatory programming to the vehicle's VIN and anti-theft system; the car will not start without it.
- You must match the OEM part number exactly (e.g., 237101UM0B) and ensure it's for a FWD, Federal emissions model built from Nov. 2011 onwards.
- Programming can be done by a Nissan dealer, a well-equipped independent shop, or some automotive locksmiths.
- A failed ECM can cause a no-start condition, stalling, poor performance, and a persistent check engine light.
- Buying a used OEM module is a viable option, but the cost of professional programming must be factored in.
Symptoms of a Failing 2012 Murano ECM
A failing ECM can cause a wide range of problems, from noticeable performance issues to a car that won't start at all. Here are the most common signs that your Murano's engine computer may be in trouble:
- Check Engine Light: An illuminated Check Engine Light is a primary indicator. Specific codes related to internal ECM errors, such as P0601, P0603, or P0605, are strong evidence of a module failure.
- Engine Performance Problems: You may experience engine stuttering, misfires, a sudden loss of power, or a decrease in fuel economy. These issues occur because the ECM can no longer correctly manage the air-fuel mixture or ignition timing.
- Car Won't Start: A completely failed ECM can prevent the engine from starting. The engine might crank but not fire up because the module isn't sending the correct signals to the fuel injectors or spark plugs. 🎬 Watch: Troubleshooting a Murano that won't start due to ECM issues.
- Erratic Shifting (Automatic Transmission): The ECM communicates with the transmission control module. A faulty ECM can send incorrect data, leading to rough or delayed shifting.
- Stalling: The engine may shut off unexpectedly while driving for no apparent reason.
Known Issues, Recalls, and TSBs
As of early 2026, there are no specific recalls issued by the National Highway Traffic Safety Administration (NHTSA) for the Engine Control Module on the 2012 Nissan Murano. The only recall for this model year concerned the Tire Pressure Monitoring System (TPMS) on vehicles built between November 2011 and January 2012. While no widespread, recall-level defects are noted for the ECM itself, like any electronic component, it can be susceptible to failure from factors like water intrusion, vibration, or age.
Important: A diagnostic trouble code (DTC) pointing to a sensor doesn't always mean the sensor is bad. A faulty ECM can sometimes generate misleading codes for other components. If you've replaced a sensor and the code returns, the ECM itself might be the root cause.
Buying a Used Engine Control Module (ECM)
Purchasing a used ECM can be a cost-effective solution, but it requires careful attention to detail to avoid compatibility problems. This is not a simple plug-and-play part.
1. Match the Part Number EXACTLY
The most critical step is to match the OEM part number on the replacement module with your original. Even a single letter or number difference can mean the module is for a different vehicle configuration and will not work.
- Known OEM Part Numbers: 237101UM0B, 237101UM0D
These numbers are specific to 2012 Nissan Murano models with a 4-door, front-wheel drive (FWD) configuration, Federal emissions, and a build date from November 2011 onwards. Do not attempt to use an ECM from an All-Wheel Drive (AWD) model or one with California emissions if your vehicle does not match these specifications.
2. Physical Inspection
When you receive the used ECM, inspect it carefully before installation:
- Check the Connectors: Look for any bent, corroded, or damaged pins. Water damage often shows up as white or green crusty residue.
- Inspect the Case: Check for dents, cracks, or any signs that the case has been opened, which could indicate a failed repair attempt.
3. Programming is NOT Optional
A used ECM must be programmed to your vehicle's Vehicle Identification Number (VIN). It is also linked to the Nissan Anti-Theft System (NATS). If you install a used ECM without programming, the immobilizer will activate, and the car will not start. All of your existing keys will need to be re-registered to the replacement ECM during this process.
Pro Tip: Some online retailers sell refurbished ECMs that are pre-programmed to your VIN. You provide your VIN at the time of purchase, and they flash the module before shipping it. This can make the part "plug and play," potentially avoiding a trip to the dealer, but you must confirm this service with the seller.
Replacement and Programming
The physical replacement of the ECM is straightforward, but the electronic programming is complex.
ECM Location
On the 2012 Nissan Murano, the ECM is located in the engine bay. You will need to remove the battery and the air filter box to access it. It is typically bolted to the driver's side strut tower.
🎬 See this walkthrough on how to remove and unplug the unit.Programming Procedure
Programming a replacement ECM requires specialized equipment, such as the Nissan CONSULT diagnostic tool.
🎬 Watch: How a technician uses Nissan Consult III for programming.- Dealer: A Nissan dealership is always the most reliable option for programming. They have the correct tools and software to ensure the ECM, immobilizer, and keys are all correctly synchronized.
- Independent Shops: Many professional independent auto repair shops have high-end scan tools (like Autel or Snap-on) and software subscriptions that allow them to perform ECM programming for Nissan vehicles.
- Automotive Locksmiths: Some well-equipped automotive locksmiths can also program Nissan ECMs and keys, as it is tied into the immobilizer system. However, you should always confirm they have the capability for your specific model year before hiring them.
Warning: This is not a DIY-friendly programming job. Without the proper tools, you cannot make the car recognize the new ECM or the keys, and the vehicle will be undrivable.
Cost Comparison
Prices can vary significantly based on the source of the part and labor rates in your area.
| Part/Service | Estimated Cost |
|---|---|
| New OEM ECM (Dealer) | $1100 - $1600+ |
| Remanufactured / Pre-Programmed ECM | $250 - $500 |
| Used OEM ECM (Salvage) | $50 - $150 |
| Shop Labor (Physical Swap) | $100 - $200 |
| Shop Labor (Programming) | $150 - $300 |
Frequently Asked Questions (FAQ)
Do I have to go to the dealer to replace my Murano's ECM?
Not necessarily. While a Nissan dealer is a guaranteed option, many high-end independent repair shops and some automotive locksmiths have the tools and software (like Nissan CONSULT or equivalent) to program a replacement ECM and re-register your keys. Always call ahead to confirm their capabilities for a 2012 Murano.
What happens if I just plug in a used ECM without programming?
The car will not start. The ECM contains security information linked to the vehicle's VIN and the Nissan Anti-Theft System (NATS). When it detects a mismatch, the immobilizer engages, preventing the engine from starting as a theft-prevention measure.
Can I use an ECM from an AWD Murano in my FWD model?
No. The ECM is programmed with software specific to the vehicle's drivetrain, emissions, and other features. Using a module from an AWD model in a FWD vehicle will cause compatibility issues, likely preventing it from working correctly, if at all.
What are the main OBD-II codes for a bad ECM?
Codes specifically pointing to an internal fault in the module are the most definitive. These include P0601 (Internal Control Module Memory Check Sum Error) and P0605 (Internal Control Module Read Only Memory (ROM) Error). Other communication-related codes (U-codes) can also indicate an ECM problem.
Helpful Videos
Technical Specifications
OEM Part Numbers: 237101UM0B 237101UM0D
Fits 2012 Nissan Murano, 4-door, Front-Wheel Drive (FWD), Federal Emissions, Built from November 2011 onwards.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Nissan Murano:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Symptoms of a Failing 2012 Murano ECM
- Known Issues, Recalls, and TSBs
- Buying a Used Engine Control Module (ECM)
- 1. Match the Part Number EXACTLY
- 2. Physical Inspection
- 3. Programming is NOT Optional
- Replacement and Programming
- ECM Location
- Programming Procedure
- Cost Comparison
- Frequently Asked Questions (FAQ)
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