CPC4 Repair | Freightliner Cascadia (2014–2019)

Freightliner CPC4 Module Repair (2014–2019) — Fast, Reliable & Cost-Effective

Get back on the road quickly with professional CPC4 module repair for your 2014–2019 Freightliner Cascadia. At Module Repair Lab, we specialize in restoring faulty CPC4 units using advanced diagnostics, BGA reballing, and component-level rework that targets the most common failure points.

Instead of replacing your CPC4 unit at high cost, we repair your original module — no programming or re-coding needed in most cases.

🔍 Why CPC4 Modules Fail — And How We Repair Them

CPC4 (Common Powertrain Controller) failures are typically caused by thermal cycling, which weakens solder joints over time. These microfractures can cause:

• No start or intermittent start

• Loss of throttle response

• Failed CPC4 communication

• Incorrect module recognition (reads as CPC2, TCM, etc.)

• Fault codes like SPN 609 FMI 12

• Flashing DEF light when DEF tank is full

• Odometer issues or dashboard failures

• Persistent check engine, ABS, or other warning lights

At Module Repair Lab, we resolve these issues by reballing the main processor with high-quality leaded solder, offering greater durability than standard lead-free solder. We also proactively rework high-failure zones and replace any degraded components to restore your CPC4’s performance and longevity.

🔧 Common CPC4 Repair Issues:

• 🚫 Engine no-start or intermittent start

• ⚠️ Throttle not responding

• ❌ No communication with CPC

• 🔁 Module misidentifies as CPC2

• 🔧 SPN 609 FMI 12 fault code

• 💡 DEF warning light blinks red with full tank

• 📉 Odometer not counting correctly

• 🔔 Constant ABS or check engine lights

• 🛠️ Dashboard cluster loses signal

If your truck is showing any of these symptoms, send your CPC4 to us for diagnosis and repair.

✅ Why Truckers Choose Module Repair Lab:

• ⚡ 48-Hour Turnaround on most repairs

• 🧠 Expert BGA Reballing with leaded solder

• 🔍 Component-Level Inspection & Rework

• 🧪 Post-Repair Functional Testing

• 🚚 Return Shipping Included

With years of experience repairing Freightliner CPC4 modules, our team delivers results diesel shops and independent truckers nationwide trust.

📦 Ship Your CPC4 To:

Module Repair Lab
113 South Lake Street
Madera, CA 93638

🔁 Get Back On the Road — Fast

We’re here to restore your CPC4 module quickly and reliably — so you avoid downtime and high replacement costs. Contact us today or place your repair order online.