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Diagnostic comparisons

Compare OBD codes and concepts

P0420 vs P0430

Upstream vs downstream O2 sensor

Bank 1 vs Bank 2

OBD1 vs OBD2: scope

Diagnostic knowledge search

23,879 code identifiers with scoped meanings, and 54,261 enhanced signal definitions. No VIN or personal information is needed.

Diagnostic explainers

Pending, stored and permanent codes · Enhanced PIDs and Mode 22

78,140 matches

Page 914 · 27391–27420 shown
Enhanced PID
CVT TC Lock

Honda · No scalar unit · 2 profiles

Enhanced PID
CVT TC Lock

Acura · No scalar unit · 1 profiles

Enhanced PID
CVT TC Ratio

Acura · No scalar unit · 1 profiles

Enhanced PID
CVT TC Ratio

Honda · No scalar unit · 2 profiles

Enhanced PID
CVT TCS ON

Nissan · No scalar unit · 5 profiles

Enhanced PID
CVT TEMP

Nissan · °C · 5 profiles

Enhanced PID
CVT TRQ RTO

Nissan · No scalar unit · 5 profiles

OBD Lens reference library · catalog legacy-owner-2026-11-02-v84-evidence. Sources and scope