DTC P050A Cold Start Idle Air Control System Performance: Description
The Electronic Throttle Control System (ETCS) controls the engine idling speed. The ETCS operates the throttle actuator to open and close the throttle valve, and adjusts the intake air amount to achieve the target idling speed.
In addition, the ECM (included in hybrid vehicle control ECU) retards the ignition timing and the ETCS increases the intake air amount to quickly increase the catalyst temperature at cold start to reduce emissions.
DTC DETECTION CONDITIONS CHART
| DTC No. | DTC Detection Conditions | Trouble Areas |
|---|---|---|
| P050A | Accumulated intake air amount during 10 seconds of idling after cold start is less than threshold (2-trip detection logic) |
|