P050B on the 2015 Jeep Compass
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 1807014 | 2023-02-21. Service bulletin. MIL Illumination, P219A, P050B And Cold Start Improvements |
|---|---|
| 1804416 | 2022-10-24. Service bulletin. Flash: Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: **P0335 - Crankshaft Position Sensor Circuit. P0456 - Evap System Small Leak.** P219A - Bank 1 Air Fuel Ratio Imbalance. P050B - Cold Start Ignition Timing Performance. Other software enhancements included that will address some customers concerns: · **Cruise control acceleration rate may be considered objectionable to some customers if the accel button is held down. · Engine is hard to start at temperatures -29°C (-20°F) for vehicles utilizing E15 fuel only.** |
| 18-070-14 | 2022-08-22. Service bulletin. Flash: MIL Illumination, P219A, P050B And Cold Start Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. Some customers may see erroneous illuminated malfunction indicator lamps (MIL) and have a hard start cold condition. ? P219A Bank 1 Air Fuel Ratio Imbalance ? P050B Cold Start Ignition Timing Performance |
| 18-063-15 | 2018-11-19. Service bulletin. Flash: MIL Illumination, Cold Start and Cruise Control Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) Illumination and/or any of the following: ? Cruise Control acceleration feels to fast at low speeds (35 mph / 56 kph). ? Engine is hard to start when cold Upon further investigation, the technician may find Diagnostic Trouble Codes (DTCs): P219A - Bank 1 Air Fuel Ratio Imbalance. P050B - Cold Start Ignition Timing Performance. |
| 18-070-14 | 2018-06-11. Service bulletin. Flash: MIL Illumination, P219A, P050B And Cold Start Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. Some customers may see erroneous illuminated malfunction indicator lamps (MIL) and have a hard start cold condition. * P219A Bank 1 Air Fuel Ratio Imbalance * P050B Cold Start Ignition Timing Performance |
| 18-044-16 | 2018-06-04. Service bulletin. Flash: Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: **P0335 - Crankshaft Position Sensor Circuit. P0456 - Evap System Small Leak.** P219A - Bank 1 Air Fuel Ratio Imbalance. P050B - Cold Start Ignition Timing Performance. Other software enhancements included that will address some customers concerns: · **Cruise control acceleration rate may be considered objectionable to some customers if the accel button is held down. · Engine is hard to start at temperatures -29°C (-20°F) for vehicles utilizing E15 fuel only.** |
| 18-048-16 REV. A | 2017-11-03. Service bulletin. Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: P0335 - Crankshaft Position Sensor Circuit. P0456 - Evap System Small Leak. P219A - Bank 1 Air Fuel Ratio Imbalance. P050B - Cold Start Ignition Timing Performance.The following software enhancement is also available: Engine is hard to start at temperatures -29°C (-20°F) for vehicles utilizing E15 fuel only (Sales Code ECN). Cruise control acceleration rate may be considered objectionable to some customers if the accel button is held down. |
7 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.