2011 Mazda 3 Engine Control Module (ECM) (OEM)
⚠️ ELECTRONIC MODULE NOTICE
This module may require programming to your vehicle by a dealer or qualified technician with professional diagnostic equipment.
- Ships in a sealed inspection bag for visual inspection
- Returns not accepted if inspection bag has been opened
- "Needs programming" is not grounds for return
- If told the module "won't program," contact us before returning
- Defective units replaced ONLY ONCE, under warranty
Product Notes
This module is for vehicles with Federal emissions standards and will not work on California Emissions (PZEV) models. This is a computer module that will require professional programming to your vehicle's VIN to function. Please consult with a qualified automotive technician before purchase to ensure they have the necessary tools to program this module.
Why Buy Used OEM Parts?
- ✓ Quality-Verified: Every used OEM part we sell has been professionally inspected and tested. While it may show some cosmetic wear, it's fully functional and ready to install.
- ✓ Original Equipment: This is a genuine OEM part — the exact part that came with your vehicle from the factory. Perfect fitment and performance.
- ✓ Works Like New: Despite visual wear, internal components and functionality are intact. Same reliability you'd expect from OEM quality.
- ✓ Significant Savings: Save 50–80% vs. new. Factory quality at a fraction of the cost — the smart choice for budget-conscious owners.
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Vehicle Fitment Guide
This part fits the following vehicles:
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| Grand Touring | Hatchback | 2011 | L4 2.3L Turbo | FWD | Manual |
| GS | Hatchback | 2011 | L4 2.0L | FWD | Automatic & Manual |
| GS | Sedan | 2011 | L4 2.0L | FWD | Automatic & Manual |
| GT | Hatchback | 2011 | L4 2.5L | FWD | Automatic & Manual |
| GT | Sedan | 2011 | L4 2.5L | FWD | Automatic & Manual |
| GX | Hatchback | 2011 | L4 2.0L | FWD | Automatic & Manual |
| GX | Sedan | 2011 | L4 2.0L | FWD | Automatic & Manual |
| i | Sedan | 2011 | L4 2.0L | FWD | Automatic & Manual |
| I Touring | Sedan | 2011 | L4 2.0L | FWD | Automatic & Manual |
| Mazdaspeed | Hatchback | 2011 | L4 2.3L Turbo | FWD | Manual |
| S | Hatchback | 2011 | L4 2.5L | FWD | Automatic & Manual |
| S | Sedan | 2011 | L4 2.5L | FWD | Automatic & Manual |
| Sport GS | Hatchback | 2011 | L4 2.5L | FWD | Automatic & Manual |
| Sport GT | Hatchback | 2011 | L4 2.5L | FWD | Automatic & Manual |
| Sport GX | Hatchback | 2011 | L4 2.0L | FWD | Automatic & Manual |
Policies
Shipping & Handling
- Standard shipping: 3-7 business days via UPS Ground
- Parts are carefully packaged to prevent damage during transit
Returns (30 Days)
We accept returns within 30 days of delivery for this part.
- Defective parts: We will replace the part or issue a refund at our discretion
- Electronic parts: Must be returned with the sealed inspection bag unopened. The clear bag allows full visual inspection before opening. Once opened, electronic parts can only be exchanged for a replacement if defective — no refunds
- Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
- Return shipping: We cover return shipping as part of our 100% money-back guarantee
- Parts must be returned in original packaging and unmodified condition
- Poorly packaged returns that arrive damaged will not be credited
6-Month Warranty
All used parts include a 6-month warranty from the date of purchase.
- If your part fails within 6 months, we will send a replacement
- Refunds are only issued if we cannot provide a suitable replacement
- Warranty covers defects — not installation errors, misuse, or damage after installation
Note: Warranty is for replacement, not refund. A part failing on day 80? We'll replace it. But the return window for refunds is 30 days.
Damaged in Shipping?
If your part arrives damaged:
- Stop immediately — do not install the part
- Keep all original packaging and boxes
- Take clear photos of the damage and packaging
- Contact us within 48 hours of delivery
We will handle the carrier claim. You are not responsible for shipping damage — we just need your help documenting it.
Order Cancellation
Orders can be cancelled before shipment for a full refund. Once shipped, cancellations follow our return policy.
2010-2013 Mazdaspeed 3 ECM: Decoding Failures, Programming, and the Infamous Harness Recall
This guide covers the essential programming requirements, common failure symptoms, and critical issues that can be misdiagnosed as a bad Engine Control Module (ECM) in the 2010-2013 Mazdaspeed 3.
Read Full Guide →⚠️ Related Trouble Codes (OBD-II)
2 matching guidesIf your scan tool is showing one of these trouble codes, this part is a common fix. Each guide explains the code, how to diagnose it, and exactly what to replace.
Miscellaneous Information
OEM Part Numbers:
Mazda: LFGV-18-881C, LFGV18881A, LFGV18881B
Other: LFGV-18881-A, LFGV-18881-B
Fits Years: 2011
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