TechnicianVision · Knowledge base
Common Mistakes: Post-Repair Scanning
I-CAR · October 23, 2018
Summary
This article highlights common mistakes in post-repair scanning, emphasizing that simply clearing diagnostic trouble codes (DTCs) is insufficient to ensure a complete repair. It explains that hidden wiring damage can exist and that some vehicles require specific test drives to trigger DTCs before a final post-scan can accurately verify system functionality.
What to do on the job
Do not simply clear DTCs; perform thorough diagnostics using OEM wiring diagrams, and conduct necessary test drives before the final post-repair scan to ensure all codes have been triggered and resolved.
How to use it
Use this document to justify the labor time required for diagnostic troubleshooting, wiring diagram research, and post-repair test drives. It serves as authoritative support that clearing codes alone does not equal a completed repair and that drive cycles are often necessary to validate safety systems.
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