ECU, ECM and PCM testing
Send your module from anywhere in the U.S. or use local drop-off in Humble for a $150 diagnostic checkout. Testing helps separate a module fault from a vehicle-side problem.
ECU testing reviews the condition of the module before a customer approves repair work. The diagnostic process can include power and ground checks, communication review, CAN or LIN behavior, visible board damage, moisture intrusion, corrosion, connector condition, and symptoms such as no start, ECU not communicating, sensor issues, and driver circuit faults.
A vehicle symptom can look like ECU failure even when the root cause is wiring, power supply, ground, immobilizer, sensor failure, or another control module. Testing first helps reduce guesswork and gives the customer a clearer answer before spending on a repair or replacement ECU.
After the module is reviewed, we contact the customer with the result. If the ECU tests bad or repairable, the final repair or cloning invoice is sent for approval. If the ECU does not show a fault during the check, the customer is informed so they can continue vehicle-side diagnosis.
This service is useful for individual vehicle owners, mechanics, mobile diagnostic techs, used car dealers, and repair shops that want to confirm a module before replacing parts.
Start with the intake form and the $150 diagnostic checkout. After payment, pack the ECU with your confirmation details, ship it to the service address, and wait for inspection. Once the module is reviewed, the shop contacts you with the result, the recommended service path, the full invoice, and the return shipping step.
Include the year, make, model, engine, ECU part number, symptoms, scan codes, previous repairs, and whether the module has been opened, wet, replaced, or programmed before. Clear details help the technician connect the bench test to the vehicle complaint and avoid delays.
ECU repair questions
The review may include module identification, visible board and connector inspection, power and ground checks, communication testing when applicable, corrosion review, and comparison with the vehicle symptoms and scan results supplied at intake.
No. A mailed module cannot reproduce every intermittent, wiring, sensor, immobilizer, network, power, ground, or vehicle-environment fault. The result explains what was observed and whether more vehicle-side diagnosis is recommended.
Most diagnostic reviews begin within 1–3 business days after the module arrives. Complex, intermittent, previously opened, or water-damaged modules may require more time.
We report the available test result so the customer or repair shop can continue vehicle-side diagnosis. The $150 diagnostic checkout covers the review and estimate preparation even when a full repair is not recommended.