Description
Part Description
This engine control module (ECM/PCM brain box) was removed from a 2008 Ford Focus donor vehicle and has been professionally inspected for proper function. The unit is currently on our shelf and ready for immediate shipment to get your Ford back on the road quickly.
The engine control module is the computer brain that manages your Ford’s engine operations, controlling fuel injection, ignition timing, emissions systems, and other critical functions. When these units fail, symptoms include no-start conditions, rough idle, poor fuel economy, check engine lights, or complete engine shutdown. Replacement is often necessary due to internal circuit failures, water damage, or electrical surges.
At 603 Auto Salvage, we maintain over 50,000 quality used auto parts from more than 1,100 vehicles in our Plaistow, NH facility. Our experienced team carefully inspects each electronic component to ensure reliable performance. Contact us to verify compatibility with your specific vehicle or browse our extensive online inventory for additional Ford Focus parts. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
Part Specifications
| Part | Engine Control Module/Powertrain Control Module (ECM/PCM) |
| Interchange # | 1385 |
| OEM Part Number | AS4A-12A650-AVB |
| Side | N/A |
| Part Grade | X — Inspected electronic control unit, tested and ready to ship |
| Warranty | 90-Day Warranty (Standard warranty for tested electronic control modules) |
| Type | Used OEM |
Vehicle Information (Donor)
| Year / Make / Model | 2008 FORD FOCNRS |
| VIN | N/A |
| Vehicle Stock # | FOCEBX30 |
Our Testing & Inspection Process
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Engine Control Module/Powertrain Control Module (ECM/PCM):
| ✅ Circuit Board Inspection | No visible damage, corrosion, or burnt components |
| ✅ Connector Pins | Clean and straight, no corrosion or damage |
| ✅ Housing Integrity | No cracks or water damage to protective casing |
| ✅ Part Number Verification | Confirmed AS4A-12A650-AVB matches application |
| ✅ Physical Condition | Good overall condition with normal wear |
Compatibility — What Vehicles Does This Part Fit?
Based on interchange #1385, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2008 | Ford | Focus | Verify part number AS4A-12A650-AVB matches your application – Contact us for full compatibility list |
Questions? Need a shipping quote? Call us now:
603 Auto Salvage | 233 Main St, Plaistow, NH 03865
Mon–Fri 8am–4:30pm | Sat 8am–2pm | Sun Closed
Warranty & Shipping
Frequently Asked Questions
Will this 2008 Ford Focus ECM work in my vehicle?
This ECM fits 2008 Ford Focus models with matching part number AS4A-12A650-AVB. The ECM may need programming to match your vehicle’s VIN and options. Contact us to verify compatibility with your specific year, engine, and transmission combination.
Does this engine control module need to be programmed?
Yes, most ECMs require programming or flashing to match your vehicle’s VIN, immobilizer system, and specific options. This service is typically performed by a Ford dealer or qualified automotive locksmith with the proper diagnostic equipment.
What are signs that my Ford Focus ECM has failed?
Common symptoms include no-start conditions, engine stalling, rough idle, poor fuel economy, transmission shifting problems, or multiple warning lights on the dashboard. A diagnostic scan can help confirm ECM failure versus other engine management issues.
How do I install a replacement engine control module?
ECM replacement involves disconnecting the battery, removing the old module from its mounting location, transferring connectors to the new unit, and securing it in place. After installation, the module must be programmed to your vehicle before it will function properly.
What causes Ford Focus ECM failure?
ECMs can fail due to electrical surges, water damage, internal circuit degradation over time, or voltage spikes from jump-starting or alternator problems. Heat and vibration can also contribute to long-term electronic component failure.
Is this a genuine Ford OEM engine control module?
Yes, this is an original equipment manufacturer (OEM) part that was factory-installed in a 2008 Ford Focus. It carries the genuine Ford part number AS4A-12A650-AVB and provides the same quality and specifications as the original unit.
Related Parts & Resources
OEM Part Numbers & Cross-Reference
Looking for this part by number? Here are the reference numbers:
| Ford Part Number | AS4A-12A650-AVB |
| Interchange Number | 1385 |
| Component Type | Engine Control Module/PCM |
Price Comparison — Why Used OEM Makes Sense
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $400-600 | 1 year | Brand new, longest wait time |
| Aftermarket | $250-400 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $100-150 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $75 | 90-Day Warranty | Tested, Grade X, ships in 24hrs |
Installation Notes
- Disconnect battery negative terminal before removing old ECM to prevent electrical damage
- Take photos of connector positions before disconnection to ensure proper reassembly
- Handle the ECM carefully and avoid static electricity – use anti-static precautions
- Ensure all connectors are fully seated and locked before reconnecting battery
- Have the ECM programmed immediately after installation – vehicle will not run properly until programmed
🔍 Free Fitment Check
Call us with your VIN and we will verify compatibility for free. No obligation, no pressure — just answers.
Our parts specialists check interchange data in real-time
Estimated Shipping Costs by Region
This part ships via FedEx Ground. Prices are estimates — call for an exact quote to your zip code.
| Region | Estimated Cost | Transit Time |
|---|---|---|
| New England (NH, MA, ME, VT, CT, RI) | $15 – $30 | 1–3 business days |
| Northeast (NY, NJ, PA, MD, VA) | $20 – $40 | 2–4 business days |
| Southeast (FL, GA, NC, SC, TN) | $25 – $45 | 3–5 business days |
| Midwest (OH, MI, IL, IN, WI, MN) | $30 – $50 | 3–5 business days |
| Southwest (TX, AZ, NM, OK) | $35 – $55 | 4–6 business days |
| West Coast (CA, OR, WA) | $40 – $65 | 5–7 business days |
Local pickup is always free. Free delivery within 30 miles of Plaistow, NH.
Why Buy From 603 Auto Salvage?
- 50,000+ parts in stock from over 1,100 vehicles on-site in Plaistow, NH
- Every part inspected before listing — no guesswork
- Family-owned salvage yard — real people, not a call center
- 90-Day Warranty on this part
- Fast shipping — most orders ship within 24 hours
- Competitive pricing — save 50–70% vs dealer prices
- Serving New Hampshire, Massachusetts & all 50 states
Ready to order? Call (603) 392-7313 or add to cart above. We are here to help.




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