Diagnostic comparisons

Compare OBD codes and concepts

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

Code or signal meaning

Reference

Brand context

54,261 matches

Page 405 · 12121–12150 shown

Enhanced PID

SOOT MASS AFTER REGENERATION

Dacia · g · 1 profiles

Enhanced PID

SOOT MASS IN DPF

Dacia · g · 1 profiles

Enhanced PID

SOOT WEIGHT SENSOR TEMPERATURE

Nissan · °C · 1 profiles

Enhanced PID

SOURCE OF LAST LOCKING

Renault · No scalar unit · 1 profiles

Enhanced PID

SOURCE OF LAST UNLOCKING

Renault · No scalar unit · 1 profiles

Enhanced PID

Lexus · rpm · 1 profiles

Enhanced PID

Lexus · rpm · 1 profiles

Enhanced PID

Perodua · rpm · 1 profiles

Enhanced PID

Perodua · rpm · 1 profiles

Enhanced PID

Lexus · rpm · 1 profiles

Enhanced PID

Lexus · rpm · 2 profiles

Enhanced PID

Perodua · rpm · 1 profiles

Enhanced PID

SPD Test Result_Incmpl

Perodua · No scalar unit · 1 profiles

Enhanced PID

SPD Test Result_Incmpl

Lexus · No scalar unit · 1 profiles

Enhanced PID

Dacia · No scalar unit · 1 profiles

Enhanced PID

SPEED CONTROL SETPOINT

Dacia · km/h · 1 profiles

Enhanced PID

Dacia · No scalar unit · 1 profiles

Enhanced PID

Renault · No scalar unit · 7 profiles

Enhanced PID

Renault · No scalar unit · 3 profiles

Enhanced PID

Nissan · No scalar unit · 4 profiles

Enhanced PID

SPEED LIMITER DISABLED BY INJECTION SYSTEM ECU

Dacia · No scalar unit · 1 profiles

Enhanced PID

SPEED LIMITER FUNCTION

Dacia · No scalar unit · 3 profiles

Enhanced PID

SPEED LIMITER FUNCTION

Dacia · No scalar unit · 2 profiles

Enhanced PID

SPEED LIMITER FUNCTION

Nissan · No scalar unit · 5 profiles

Enhanced PID

SPEED LIMITER FUNCTION

Renault · No scalar unit · 2 profiles

Enhanced PID

SPEED LIMITER FUNCTION

Renault · No scalar unit · 5 profiles

Enhanced PID

SPEED LIMITER INHIBITED BY INJECTION

Nissan · No scalar unit · 5 profiles

Enhanced PID

SPEED LIMITER INHIBITED BY INJECTION

Dacia · No scalar unit · 2 profiles

Enhanced PID

SPEED LIMITER INHIBITED BY INJECTION

Renault · No scalar unit · 2 profiles

Enhanced PID

SPEED LIMITER INHIBITED BY INJECTION

Renault · No scalar unit · 1 profiles

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