DTC P050A: Cold Start Idle Air Control System Performance; DTC P050B: Cold Start Ignition Timing Performance [06/2016 - 12/2017]: Description
Cold start emission reduction strategy (CSERS) is employed to shorten the time to catalyst light-off from cold start. CSERS consists of retarded ignition timing and increased engine idle speed for a calibrated period of time. This monitor detects malfunctions of the ECM commanded ignition timing and engine idle speed not reaching the target values.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P050A | The engine speed does not achieve the target engine speed for 7 seconds with engine cooled down. (2 trip detection logic) |
|
| P050B | The ignition timing is not retarded for 7 seconds, despite rapid warming control of the catalyst (to retard the ignition timing). (2 trip detection logic) |