Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Part 1

OBD System Description

Catalyst Monitor

Misfire Monitor

EVAP Control System Monitor

Fuel System Monitor

A/F Sensor Monitor

A/F Sensor Circuit Monitor

HO2S Monitor

HO2S Circuit Monitor

A/F Sensor Heater Monitor

HO2S Heater Monitor

Thermostat Monitor

Cold Start Idle Air Control System Performance Monitor

CMP Control System Monitor

Sensor Circuit Monitor

MAF Sensor Rationality Monitor

IAT Sensor Rationality Monitor