DTC P050A: Cold Start Idle Air Control System Performance; DTC P050B: Cold Start Ignition Timing Performance [09/2016 - ]: 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 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 No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P050A | Accumulated intake air amount during 10 seconds of idling after cold start, less than threshold (2 trip detection logic) |
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| P050B | Ignition timing retard value insufficient for 8 seconds or more during 10 seconds of P050A monitoring duration at cold start (2 trip detection logic) |
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