$2,195
+ $500 refundable core deposit (90-day return window). No-deposit option available at checkout: send your core first.
Usually ships same day on orders in by 2 PM CT
2-year transferable warranty · Dealer programming required · Core deposit refunded on return
Prefer to fix your own unit?
Flat rebuild $1,245 (bench fee included) · 3-day turnaround — you keep your original ECM.
Start a repair instead →
Flat rebuild $1,245 (bench fee included) · 3-day turnaround — you keep your original ECM.
Start a repair instead →
| Part Number | 2109555 |
| Brand | Paccar |
| Condition | Remanufactured |
| SKU | NL-PACCAR-MX13-2109555 |
About the Paccar MX-13 ECM
The 2109555 is the engine control module for the Paccar MX-13.
The PCI is the main engine control computer on Paccar MX-13 and MX-11 diesels in Kenworth, Peterbilt, and DAF trucks, roughly 2010 through 2022. Fits Paccar MX-13.
We repair this ECM on the bench and stock tested, remanufactured exchange units, programmed to your engine and ready to install. Send yours in for repair, or buy an exchange unit off the shelf.
Remanufactured Paccar MX-13 ECM (PCI), P/N 2109555. Fits Paccar MX-13. Dealer programming required after install. Usually ships same day on orders in by 2 PM CT. 2-year warranty. Core exchange required. $500 core deposit refunded when your old ECM returns within 90 days.
Common Paccar MX ECM failures we repair
We fix these on the bench every day. Wiring and connectors can mimic ECM failure, so we test first.
- Injector driver failure. The most-cited MX fault: the circuit that fires the injectors burns or shorts, often paired with an internal power-supply fault. We rebuild that section on the bench.
- No-start, unit dead, no communication. The ECM will not talk to the diagnostic tool or wake the engine, usually from internal power-supply damage. We restore the power section so it boots and communicates again.
- Blown fuses and short events. The unit repeatedly pops fuses or shows burnt board components from a short. We find the shorted part and clear the fault at the component level.