Some aftermarket scan tools can perform limited calibrations and OEM-specific tests.

• A. True
• B. False
• C. Only calibrations
• D. Only OEM tests

Answer: (A)

Some aftermarket scan tools can do more than just read and clear codes—they often include functions for limited calibrations and OEM-specific tests. This happens because many tools provide bi-directional control and access to certain manufacturer diagnostic protocols, sometimes through licensed software or subscriptions. The calibrations they can perform are usually limited to common relearns and resets that are needed after servicing components, such as throttle relearn, crankshaft or cam relearn procedures, ABS sensor initialization, TPMS resets, or battery registration. OEM-specific tests are similarly available when the tool has the appropriate access to the vehicle’s manufacturer protocols, allowing guided tests or checks that align with factory procedures.

However, these capabilities vary a lot by tool and by vehicle. Not every model or module supports the same calibrations or OEM tests, and some functions may require extra licenses, subscriptions, or adapters. So this statement is true because many aftermarket tools do offer some limited calibrations and OEM-specific tests, even though the full set of capabilities isn’t universal.