BMW F30 320i Engine ECU Fault Causing Misfires
Do you have an F30 BMW 320i experiencing misfires? If it was manufactured between 2013 and 2017, there’s a good chance your engine control module has malfunctioned. Fortunately, we remanufacture these BMW 320i engine ECUs within 2-3 working days and with an unlimited-mileage lifetime warranty included.
Shop Now – BMW F30 320i ECU Repair
Unfortunately, there are multiple types of engine ECU that fail and cause misfire problems for BMW 320i owners. Both the Bosch MEVD17 and Bosch MG1CS003 are comprised of components that break down prematurely, causing a number of frustrating symptoms.
If your BMW 320i is fitted with one of these ECUs, send it to us for comprehensive testing and we’ll let you know if it’s the source of your F30’s misfires.
Our process takes just 2-3 working days and you won’t even need to recode the engine ECU back to your F30 320i after we’ve rebuilt it. Begin the process today by including your symptoms and vehicle details when submitting our short test form.
Which engine ECU is fitted to my BMW 320i (F30)?
If you’re experiencing misfires in a BMW 320i that was manufactured between 2013 and 2015, it’s likely you have an issue with the Bosch MEVD17 ECU. These control modules are fitted to models carrying 2.0-litre N20 B20 A/B petrol engines.
On the other hand, if your F30 320i was manufactured between 2016 and 2017 and carries a 2.0-litre B48 petrol engine, you’re much more likely to be experiencing issues with the Bosch MG1CS003 engine ECU.
Shop Now – Bosch MEVD17 Repair
Shop Now – Bosch MG1CS003 Repair
BMW 320i (F30) misfires explained
In many 320i vehicles fitted with one of the aforementioned ECUs, misfires are often caused by internal degradation within the engine control module.
As you’ll know, the engine ECU plays an instrumental role in fuel injection and ignition timing. These control modules make use of their complex internal circuitry and sophisticated processors to be able to calculate the precise moment for optimal combustion to take place.
Once sensor signals for aspects like throttle position, intake airflow, and exhaust gas oxygen content have been processed, the ECU is able to determine the appropriate output as per the formulae in its software. For example, a predetermined output might involve activating fuel injector or ignition coil circuits.
Unfortunately, when the ECU suffers internal component degradation, this process is disrupted and no longer happens as seamlessly as it once did. As you can imagine, even the slightest adjustment to fuel injection or ignition timing can significantly impact the running of the engine.
In BMW F30 320i vehicles, when one of the aforementioned ECUs suffers an internal breakdown, it typically results in misfires and a noticeable loss of engine power. When investigating an affected ECU with a compatible diagnostic tool, you’ll likely uncover DTCs for combustion misfires in one or more cylinders.
The electronic identification of a misfire is a complex process, but in short, the engine ECU relies on a variety of data sources, such as the crankshaft position sensor, to understand the speed and behaviour of the engine over various combustion cycles. When the data the ECU receives falls outside of its expected values, a combustion misfire DTC can be stored.
Therefore, it’s important to consider that a stored combustion misfire DTC doesn’t automatically mean your BMW F30 320i’s ECU is defective. A huge variety of issues external to the engine control module, from defective sensors and wiring faults, to poor-quality fuel or carbon build-ups on the intake valves, can cause similar symptoms and DTCs.
This is why we’d recommend sending your F30 320i’s ECU to us for testing as we’ll do the hard work for you. We’ll test your unit within 2-3 working days and let you know straight away if it’s the cause of your BMW 320i’s misfire issues, saving you significant time and stress.
Our solution
Having diagnosed their repeated misfire issues as being caused by a defective engine control module, many BMW F30 320i owners choose to purchase a replacement unit. However, many like-for-like ECUs come loaded with the very same internal components that failed originally, leaving owners vulnerable to future failure.
Instead, we’d recommend having your original control unit comprehensively tested and remanufactured.
We test both types of F30 320i ECUs on our own custom-developed hardware-in-the-loop rigs. This allows us to observe the unit’s performance under realistic operating conditions, unveiling the root cause of failure.
As part of our remanufacturing process, we’ll enhance all potentially failing areas of the control module to provide long-lasting functionality. Our rebuilds incorporate components that exceed OEM standards, again to enhance unit durability and keep your BMW 320i free of misfires for the foreseeable future.
We’ll carry this out in just 2-3 working days and we’ll keep you covered for good with our unlimited-mileage lifetime warranty. Find your BMW F30 320i ECU below, or head straight to our test form to get started today.
MEVD17
Common failure symptoms:
- One or more cylinders misfiring
- Noticeable loss of power
- Limp mode
- Irregular idle
- EML on
Common fault codes:
- 140001 – Combustion misfires, several cylinders: Fuel injection is switched off
- 140010 – Combustion misfires detected, several cylinders
- 140201 – Combustion misfire, cylinder 2: Fuel injection is switched off
- 140210 – Combustion misfire detected, cylinder 2
- 150102 – Ignition, cylinder 1: combustion time too short
- 150202 – Ignition, cylinder 2: combustion time too short
MG1CS003
Common failure symptoms:
- One or more cylinders misfiring
- Noticeable loss of power
- Limp mode
- Irregular idle
- EML on
Common fault codes:
- 140001 – Combustion misfires, several cylinders: Fuel injection is switched off
- 140010 – Combustion misfires detected, several cylinders
- 140301 – Combustion misfire, cylinder 3: Fuel injection is switched off
- 140310 – Combustion misfire detected, cylinder 3
Test and rebuild:
We utilise the very latest testing equipment to thoroughly analyse these F30 320i ECUs before any rebuilding work is carried out. Once we’ve pinpointed the fault under realistic operating conditions, we’ll then strengthen all potentially failing areas of the control module and include higher-than-OEM-standard components where appropriate.
Programming:
You won’t need to worry about having to recode your rebuilt ECU back to the vehicle like you would when purchasing a replacement unit. We preserve this information to save you yet more time and money.
Quality:
We take pride in the quality of our service which is why we’re happy to provide an unlimited-mileage lifetime warranty on all rebuilds. Our company-wide defect rate is now as low as 0.49% and we’re ISO 9001 (quality management) accredited too.
Warranty:
Lifetime unlimited mileage*
How do I get my unit rebuilt?
To pay for the rebuild click the Shop Now link above, select your part number and click: Get yours rebuilt.
Print the payment/booking confirmation email.
Package the F30 320i ECU inside a sturdy box with plenty of packaging material and make sure you include your confirmation email in the box.
Send us your package by tracked courier (the shipping instructions are on the confirmation email).
Once received we will test, rebuild and return your BMW 320i ECU with an unlimited mileage lifetime warranty. If your unit turns out not to be faulty then we will refund your payment less a small testing fee and return shipping.
What if I don’t want to pay up front?
This is not a problem, if you prefer this option then follow these steps:
Fill in and submit this test form.
Print the booking confirmation email.
Package the control module inside a sturdy box with plenty of packaging material and make sure you include your confirmation email in the box.
Send us your package by tracked courier (the shipping instructions are on the confirmation email).
Once received, we will test your F30 320i ECU and call to inform you of the outcome of testing. If your BMW 320i ECU is faulty and you choose to go ahead with the rebuild, then we will take payment over the phone using a debit/credit card.
We will then rebuild your control module and return it to you with an unlimited mileage warranty.
If you require further information regarding this BMW 320i misfire page then please contact us.