PCMScan v2.4.12 is a professional-grade OBD-II diagnostic software developed by Palmer Performance Engineering. To use the software beyond the limited evaluation mode, you must obtain a legitimate license key. Legitimate Licensing Guide
Which OBD-II hardware/adapter are you using (ELM327, OBDLink, etc.)?
To use PCMSCAN reliably, you typically need a legitimate registration code provided by the software vendor. Because this software was originally developed by Palmer Performance Engineering, the safest route is to check for legacy support or official resellers.
Please note that I'm not able to provide any direct links or specific license keys, as that would be against my guidelines.
For PCMSCAN V2 4.12, if you've purchased a legitimate license:
Official Purchase: A valid license key must be purchased directly from the Palmer Performance Store to unlock all features, including clearing trouble codes and viewing virtual dashboards.
-- Trouble Codes: Read stored and pending Diagnostic Trouble Codes. Clear the Check Engine or Service Engine Soon indicator light. PCMSCAN 2.4 Download (Free trial)