Diesel Diagnostics & ECM/PCM Repair in Clackamas, OR

Advanced Troubleshooting for Diesel Engines, Electronics & Computers

Modern diesel vehicles are complex machines loaded with sensors, modules, and electronic controls. When something goes wrong, you need more than a code reader—you need expert diagnostics. At Rob’s Automotive Repair Center in Clackamas, OR, we provide diesel diagnostics and ECM/PCM repair for trucks, vans, and European diesel cars. Our process gets to the root of the problem so you don’t waste money on guesswork.

Why Accurate Diesel Diagnostics Matter

Diesel owners often experience issues like:

• Hard starts or no-start conditions
• Power loss or limp mode
• Check Engine, DEF, or glow plug lights
• Excessive smoke or fuel economy drop
• Intermittent electrical issues

These problems can have multiple causes. Instead of replacing parts blindly, our team uses advanced diagnostic tools and proven testing methods to find the exact fault.

Our Diesel Diagnostic Process

We take a systematic approach:

1. Initial Interview & Triage – Understanding how and when the problem occurs
2. Computer Scans & Data Logging – Reading live data, codes, and balance rates
3. Functional Testing – Checking sensors, wiring, fuel pressure, and electrical circuits
4. Verification – Confirming the fault before repairs begin
5. Post-Repair Testing – Ensuring the fix solves the issue long-term

This process saves you money and prevents repeat breakdowns.

ECM/PCM & Electrical Repairs

Sometimes the issue lies in the diesel’s “brain.” We handle:

• ECM/PCM testing, replacement & programming
• Sensor replacement (NOx, pressure, temperature, fuel rail, and more)
• Glow plug and control module repairs
• Wiring harness troubleshooting & repair
• Starter/alternator/battery diagnostics

From small wiring faults to full module replacements, we restore your diesel’s reliability.

Check Engine Light & Emissions Diagnostics

A lit warning light doesn’t always mean one failed part—it could point to multiple systems. We specialize in:

• DPF & regeneration faults (P2002 codes, limp mode)
• EGR system codes (flow restrictions, stuck valves)
• Fuel injector balance and contribution testing
• DEF/SCR system diagnostics for newer trucks

Our technicians translate the data into real solutions.

Why Diesel Owners Trust Rob’s

• Dealer-level diagnostic equipment for domestic & European diesels
• Experienced diesel techs with brand-specific training (Cummins, Power Stroke, Duramax, VW, Audi, Mercedes)
• Accurate troubleshooting that reduces unnecessary parts replacement
• 4-year/48,000-mile nationwide warranty on qualifying repairs
• Transparent communication so you know exactly what’s wrong and how we’ll fix it

We solve problems that leave other shops guessing.

Serving Clackamas & the Portland Metro

From diesel trucks and vans to European diesels, we provide diagnostics across the Portland metro, including Oregon City, Happy Valley, Milwaukie, and Damascus. If you’re searching for diesel diagnostics near me or diesel ECM repair in Clackamas, Rob’s Automotive Repair Center is your answer.

Schedule Your Diesel Diagnostic Today

Don’t waste time and money replacing the wrong parts. Our diesel diagnostic specialists will find the cause and fix it right.
Call today or schedule online for expert diesel ECM and diagnostics service in Clackamas, OR.

Call Us
(503) 650-6101

Business Addresss:
11955 SE Hwy 212, Clackamas, OR 97015

Business Hours:
Open Monday through Friday
from 7:00am – 6:00pm