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Jan 13, 2015 1:24 PM in response to mrhambeefpotby Drew Reece,Intel-based Mac Power On Self Test RAM error codes - Apple Support & the linked article…
Mac computers: About startup tones - Apple Support
Any error codes in AHT are a concern, run an extended test many times to allow it to 'warm up'. Some errors can appear when the device gets hot & expansion occurs (& vice versa).
Search the error code to get an idea of what it may relate to but Apple don't publish the meanings so a lot of info is just gleaned from various sleuthing. Some AHT errors are also 'normal' which complicates matters.