What does code P050D mean?

Q: What does code P050D mean?

Cold Start Rough Idle. P050D means the engine computer detected a rough idle during a cold start, typically within the first few minutes after a cold soak. The powertrain control module monitors crankshaft speed fluctuations and misfire counts while the engine is still in open-loop warm-up, and it sets this code when the idle quality falls outside the expected range for those conditions.

DTC codes / P05xx · Vehicle speed, idle control and auxiliary inputs / P050D

P050DCold Start Rough Idle

P050D means the engine computer detected a rough idle during a cold start, typically within the first few minutes after a cold soak. The powertrain control module monitors crankshaft speed fluctuations and misfire counts while the engine is still in open-loop warm-up, and it sets this code when the idle quality falls outside the expected range for those conditions.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.