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VANS & ECODIESEL

Sprinter & EcoDiesel

Miami's heat and humidity accelerate PCM corrosion in Sprinter delivery vans and EcoDiesel engines. We diagnose and repair the module without pulling your van off its route longer than it has to be.

Quote Sprinter/EcoDiesel PCM
EcoDiesel EGR factory recall (2019)
108,000 units
Sprinter 3.0L V6 coverage
2010–2023
RAM/Jeep EcoDiesel 3.0L coverage
2014–2023
Diagnostics

Here's how we diagnose it

✔ connection established
> scanning: sprinter & ecodiesel...
⚠ fault pattern recognized
> component-level repair probability: high

Miami's heat and constant humidity accelerate corrosion and solder fatigue in the PCM on these vans and trucks — especially on vehicles running daily, high-mileage routes like delivery fleets, which is the worst possible time for a unit to go down.

Symptom bench

Common symptoms

Pick the symptom to see the likely cause

01 / 06

PCM won't communicate with the scan tool

The module's network stage or its internal power supply has failed, and no tool can find it even though the rest of the vehicle responds normally.

Our process

  1. Step 01

    Remote diagnostics

    You describe the symptoms and fault codes, we walk you through pulling the PCM and coordinate shipping

  2. Step 02

    Connector and harness check

    We confirm whether the fault comes from the module or from an oil/water leak before touching the board

  3. Step 03

    Component-level repair

    We repair the solder joint or the specific damaged component, without replacing the whole unit

  4. Step 04

    Plug & Play delivery

    The PCM comes back ready to install, bench-tested

The real weak point: the connector, not always the board

On these diesel V6 engines (OM642/OM651 in the Sprinter, and the VM Motori-derived block sharing the same Bosch module in the EcoDiesel) one well-documented failure path starts outside the PCM itself: the camshaft position sensor seal dries out or cracks, engine oil wicks up the harness, and reaches the module connector, shorting it out from the inside. To the naked eye, the result looks identical to a board failure — which is why we check the connector and harness before writing off the whole module.

Why diagnosis doesn't stop at the module

On the EcoDiesel, a cracked EGR cooler — the reason behind a 2019 factory recall covering roughly 108,000 RAM 1500 trucks — lets coolant leak into the engine and throws emissions codes that look a lot like an electrical PCM failure. Before we call a module repair done, we confirm there isn't a parallel mechanical issue, because if there is, the symptom comes right back even with a perfect module.

Component-level repair, to minimize time off the route

We prioritize component-level PCM repair over a full replacement — for a delivery fleet, the priority is getting back on the route, not waiting on an imported part.

Did your Sprinter or EcoDiesel lose power on the route? Tell us the symptom and we'll set up the PCM diagnosis.

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Models we cover

  • Mercedes Sprinter 3.0L V6 (2010-2023) — Bosch module
  • RAM 1500 / Jeep EcoDiesel 3.0L (2014-2023) — same Bosch module as the Sprinter, same engine family

Frequently asked questions

My Sprinter suddenly lost power — is it always the PCM?

Not always. A camshaft position sensor seal letting oil reach the connector is a well-documented cause with the same symptom — we check for it before blaming the module.

Can the fleet keep running while the PCM is being repaired?

Yes — we coordinate shipping and return of the module by courier, and the priority is minimizing time off the route.

On the EcoDiesel, can an emissions code not be the PCM?

Correct — a cracked EGR cooler (behind a 2019 factory recall) throws emissions codes that look a lot like an electrical PCM failure. We confirm there's no parallel mechanical issue before calling the repair done.

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