DTC Detection Logic
ECM controls ignition timing and engine idle speed when engine is started with pre-warming up condition.
This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P050A |
Cold start idle air control system performance |
Diagnosis condition |
-- |
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Signal (terminal) |
-- |
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Threshold |
ECM does not control engine idle speed properly when engine is started with pre-warming up condition. |
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Diagnosis delay time |
-- |
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P050B |
Cold start ignition timing performance |
Diagnosis condition |
-- |
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Signal (terminal) |
-- |
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Threshold |
ECM does not control ignition timing properly when engine is started with pre-warming up condition. |
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Diagnosis delay time |
-- |
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P050E |
Cold start engine exhaust temperature too low |
Diagnosis condition |
-- |
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Signal (terminal) |
-- |
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Threshold |
The temperature of the catalyst inlet does not rise to the proper temperature when the engine is started with pre-warming up condition. |
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Diagnosis delay time |
-- |
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