AI4Car / Diagnostics

Codes & scan data

Name: AI4Car - OBD2 Scanner
Author: AI4Car

Read stored clues before deciding what to test.

P0300 on four Silverado cylinders

A 2000 Silverado showed a flashing check-engine light and P0300.

Generic tools often focus on powertrain information and may not access ABS, airbag, or body systems.

It can show a monitor detected a possible fault before confirmation criteria were met.

This code often tells the engine controller that the transmission controller has reported a fault. The useful detail may be stored elsewhere.

The conditions captured when a code was stored can help you reproduce an intermittent problem.

A pending code can show that a monitor saw a problem before the conditions for a confirmed fault were met.