OBD System Description - Comprehensive Component Monitor (Engine Output)
OBD System Description - Comprehensive Component Monitor (Engine Output)
DTC Description / Detecting Condition / Confirmation Procedure
P0444
Refer to P0444 DTC P0444: Evaporative Emission Control System Purge Control Valve Circuit Open.
P0445
Refer to P0445 DTC P0445: Evaporative Emission Control System Purge Control Valve Circuit Shorted.
P0447
Refer to P0447 DTC P0447: Evaporative Emission Control System Vent Control Circuit Open.
P0448
Refer to P0448 DTC P0448: Evaporative Emission Control System Vent Control Circuit Shorted.
P0496
Refer to P0496 DTC P0496: Evaporative Emission Control System Flow during Non-Purge.
P0505, P0506, P0507
Refer to P0505 DTC P0505 / P0506 / P0507: Idle Air Control (IAC) System Malfunction / RPM Lower than Expected / RPM Higher than Expected.
Canister purge valve circuit monitor
Operation
Enable condition
Typical malfunction thresholds
Canister purge valve monitor
Operation
Enable condition
Typical malfunction thresholds
Canister vent valve circuit monitor
Operation
Enable condition
Typical malfunction thresholds
IAC System Monitor
Monitoring procedure
The Idle Air Control (IAC) solenoid functionally checked by monitoring the closed loop idle speed correction required to maintain the desired idle rpm. If the proper idle rpm cannot be maintained and the system has a high rpm (+200) or low rpm error (-100) greater than the malfunction threshold, an IAC malfunction is indicated.
Operation
Enable condition
Typical malfunction thresholds
IAC Actuator Circuit Monitor
Monitoring procedure
The Idle Air Control (IAC) solenoid functionally checked by monitoring the closed loop idle speed correction required to maintain the desired idle rpm. If the proper idle rpm cannot be maintained and the system has a high rpm (+200) or low rpm error (-100) greater than the malfunction threshold, an IAC malfunction is indicated.
Operation
Enable condition
Typical malfunction thresholds
MODE $06 Data
