Vehicle manufacturers

Diagnostic behaviour varies by manufacturer even where the code definitions are standardised: the communication protocol, the position of the diagnostic connector, and the manufacturer-specific code ranges all differ. Each manufacturer page records those differences.

All manufacturers

• Toyota P0, P1, B1, C1, U0

Last verified 2026-03-14 · Sources: 2018 Camry Repair Manual, engine and emission control section (Toyota Motor Corporation)