OBD2 codes are crucial for identifying car issues, but sellers may clear them before selling a used car. A diagnostic scan can reveal signs of cleared codes, such as "not ready" monitors. Check these details to avoid hidden problems and ensure a safe purchase.

To clear car codes manually, you can disconnect the battery, cycle the ignition key, or remove the ECU fuse. While effective, these methods should only be used after fixing the underlying problem. For a more reliable fix, an OBD2 scanner like the ANCEL V6 Pro is recommended.

The Ancel AD310 is an affordable OBD2 scanner that lets you clear diagnostic codes, turning off the check engine light without a trip to the mechanic. Designed for vehicles from 1996 onward, it offers easy-to-use code reading and erasure, ideal for quick diagnostics and inspection readiness.

While OBD2 tools are invaluable for diagnostics, improper use can lead to issues. Incompatible or low-quality devices may cause ECU errors, battery drain, or even electrical interference. To avoid risks, always use a reputable, compatible OBD2 tool and follow best practices for safe operation.

Bidirectional scan tools allow mechanics to interact directly with a vehicle’s systems, enabling component activation, adaptations, and ECU coding. Unlike basic readers, these tools use advanced protocols to send real-time commands to control modules, making them essential for professional diagnostics.

A/F testing is crucial for vehicle performance, measuring the air-to-fuel ratio to ensure efficient combustion, reduce emissions, and prevent engine wear. By using tools like an OBD-II scanner, A/F ratio meter, and monitoring oxygen sensors, you can optimize fuel efficiency and engine health.