best methods to fix dtc code P050D
kenel2011
There is no single simple answer and a proper diagnosis is required. Follow the diagnostic.
28 - DTC-Based Diagnostics / MODULE, Powertrain Control (PCM), 2.4L / Diagnosis and Testing
P050D-COLD START ROUGH IDLE
Theory of Operation
The objective of the Dynamic Crankshaft Fuel Control (DCFC) is to reduce the fuel as much as possible during a cold start. The DCFC begins subtracting fuel from a high limit upon a cold start and keeps removing fuel in an attempt to get to a calibrated lean limit. DCFC stops removing fuel when rough idle is detected or the lean limit is reached.
When Monitored and Set Conditions
When Monitored: This diagnostic runs continuously when the following conditions are met:
•In a Cold start condition.
•Ambient Air temperature between -7° C and 50° C (19.4° F and 122° F).
•Engine Coolant temperature between -7° C and 50° C (19.4° F and 122° F).
•The difference between the Ambient Air temp and ECT temp at Start is equal to or less than 10° C (50° F).
•Engine running at idle only.
Set Conditions:
•If a rough idle is detected and the Dynamic Crankshaft Fuel Control remains or returns to the high limit window for a calibrated time.
Default Actions:
•The MIL light will illuminate.
Possible Causes
ENGINE MECHANICAL PROBLEM
1/1 O2 SENSOR
MAP SENSOR
ECT SENSOR
IGNITION COIL
SPARK PLUG
FUEL INJECTOR
INTERNAL FUEL LEAK
FUEL DELIVERY SYSTEM
POWERTRAIN CONTROL MODULE (PCM)
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
Diagnostic Test
1.ENGINE COOLANT TEMPERATURE
NOTE: Diagnose and repair any other active component or circuit DTCs before continuing with this procedure.
NOTE: Allow the engine to cool to ambient temperature before proceeding.
1. Turn the ignition on.
2. With the scan tool, compare the AAT, ECT and IAT Sensor values.
Is the Engine Coolant Temperature Sensor value within 15°C (59°F) of the other two sensor values?
Yes
•Go To 2
No
•Perform the INTERMITTENT CONDITION diagnostic procedure. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
2.CHECK FOR AN ACTIVE DTC
NOTE: Review the vehicle repair history for any misfire condition repairs that have been performed. Diagnose and repair any misfire DTCs that are present before continuing with this procedure.
1. Turn the ignition on.
2. With the scan tool, read DTCs. Copy DTC and Freeze Frame information to the repair order.
3. Start the engine and allow it idle.
WARNING:
When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
NOTE: Attempt to operate the vehicle under conditions similar to which the DTC was set.
4. With the scan tool, read DTCs.
Is the DTC active or pending?
Yes
•Go To 3
No
•Perform the INTERMITTENT CONDITION diagnostic procedure. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
3.VISUAL INSPECTION
NOTE: Anything that affects the speed of the crankshaft can cause this DTC to set.
1. Inspect the engine for any of the following conditions:
•Worn serpentine belt
•Misalignment or binding water pump, P/S pump or A/C Compressor pulleys
•Improper CKP, CMP, or MAP mounting
•Poor connector/terminal to component connection for CKP Sensor, CMP Sensor, MAP Sensor, Fuel Injector, Ignition Coil, etc.
•Vacuum leaks
•Restriction in the air induction or exhaust system
•Internal engine component malfunction
NOTE: Rough Idle may occur and may not be caused by component failure. Any of the following conditions can be the cause:
•Moisture on ignition system components
•Insufficient fuel
•Low quality fuel
•Manual transmission bog
•Towing overload
Were any problems found?
Yes
•Repair as necessary.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
•Go To 4
4.MAP SENSOR OPERATION
1. Turn the ignition on.
2. With a scan tool, read the Barometric Pressure.
NOTE: The Barometric Pressure should be approximately equal to the actual barometric pressure.
3. Turn the ignition off.
4. Connect a Vacuum Gauge to a Manifold Vacuum source.
WARNING:
When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
5. Start the engine.
6. Allow the engine to idle.
NOTE: If engine will not idle, maintain a constant rpm above idle.
7. With the scan tool, read the MAP Sensor vacuum value.
NOTE: If necessary, compare the Barometric Pressure value of this vehicle to the value of a known good vehicle of a similar make and model.
Is the scan tool reading for MAP vacuum within 1 inch of Hg of the Vacuum Gauge and is the Barometric Pressure reading of the vehicle approximately the same as actual Barometric Pressure?
Yes
•Go To 5
No
•Verify that there is good pin to terminal contact in the MAP Sensor and Powertrain Control Module connectors. Replace the MAP Sensor if no problems were found with the connectors.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
5.CHECKING THE FUEL DELIVERY SYSTEM
1. Perform the CHECKING THE FUEL DELIVERY SYSTEM test procedure. (Refer to 29 - Non-DTC Diagnostics/Drivability - Gas - Diagnosis and Testing)
Were any problems found?
Yes
•Repair as necessary in accordance with the Service Information.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
•Go To 6
6.SPARK PLUG
1. Turn the ignition off.
2. Remove the Spark Plugs.
3. Inspect the Spark Plugs and Ignition Coils/Ignition cables for the following conditions:
•Cracks
•Carbon Tracking
•Foreign Material
•Spark Plug gap size out of specifications
•Loose or broken electrode
•Fouling
NOTE: Lightly tap the bottom of the spark plug on a solid surface. The electrode in the spark plug should not move.
Were any of the above conditions present?
Yes
•Replace the Spark Plugs. If a Spark Plug was found to have carbon tracking or was fouled, verify that the Ignition Coil is not damaged.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
•Go To 7
7.ENGINE MECHANICAL
1. Check for any of the following conditions/mechanical problems:
•ENGINE VACUUM - must be at least 13 inches in neutral
•ENGINE VALVE TIMING - must be within specifications
•ENGINE COMPRESSION - must be within specifications
•ENGINE EXHAUST SYSTEM - must be free of any restrictions or leaks.
•ENGINE PCV SYSTEM - must flow freely
•TORQUE CONVERTER STALL SPEED - must be within specifications
•POWER BRAKE BOOSTER - no internal vacuum leaks
•FUEL - must be free of contamination
•CYLINDER LEAKAGE TEST - must be within specifications
Are there any engine mechanical problems?
Yes
•Repair as necessary.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
•Go To 8
8.POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the related Sensor, Coil, Injector and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the related Sensors, Coils, Injectors and the Powertrain Control Module connectors.
4. Perform any Service Bulletins that may apply.
Were there any problems found?
Yes
•Repair as necessary.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
•Replace and program the Powertrain Control Module in accordance with the Service Information.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
28 - DTC-Based Diagnostics / MODULE, Powertrain Control (PCM), 2.4L / Diagnosis and Testing
P050D-COLD START ROUGH IDLE
Theory of Operation
The objective of the Dynamic Crankshaft Fuel Control (DCFC) is to reduce the fuel as much as possible during a cold start. The DCFC begins subtracting fuel from a high limit upon a cold start and keeps removing fuel in an attempt to get to a calibrated lean limit. DCFC stops removing fuel when rough idle is detected or the lean limit is reached.
When Monitored and Set Conditions
When Monitored: This diagnostic runs continuously when the following conditions are met:
•In a Cold start condition.
•Ambient Air temperature between -7° C and 50° C (19.4° F and 122° F).
•Engine Coolant temperature between -7° C and 50° C (19.4° F and 122° F).
•The difference between the Ambient Air temp and ECT temp at Start is equal to or less than 10° C (50° F).
•Engine running at idle only.
Set Conditions:
•If a rough idle is detected and the Dynamic Crankshaft Fuel Control remains or returns to the high limit window for a calibrated time.
Default Actions:
•The MIL light will illuminate.
Possible Causes
ENGINE MECHANICAL PROBLEM
1/1 O2 SENSOR
MAP SENSOR
ECT SENSOR
IGNITION COIL
SPARK PLUG
FUEL INJECTOR
INTERNAL FUEL LEAK
FUEL DELIVERY SYSTEM
POWERTRAIN CONTROL MODULE (PCM)
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
Diagnostic Test
1.ENGINE COOLANT TEMPERATURE
NOTE: Diagnose and repair any other active component or circuit DTCs before continuing with this procedure.
NOTE: Allow the engine to cool to ambient temperature before proceeding.
1. Turn the ignition on.
2. With the scan tool, compare the AAT, ECT and IAT Sensor values.
Is the Engine Coolant Temperature Sensor value within 15°C (59°F) of the other two sensor values?
Yes
•Go To 2
No
•Perform the INTERMITTENT CONDITION diagnostic procedure. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
2.CHECK FOR AN ACTIVE DTC
NOTE: Review the vehicle repair history for any misfire condition repairs that have been performed. Diagnose and repair any misfire DTCs that are present before continuing with this procedure.
1. Turn the ignition on.
2. With the scan tool, read DTCs. Copy DTC and Freeze Frame information to the repair order.
3. Start the engine and allow it idle.
WARNING:
When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
NOTE: Attempt to operate the vehicle under conditions similar to which the DTC was set.
4. With the scan tool, read DTCs.
Is the DTC active or pending?
Yes
•Go To 3
No
•Perform the INTERMITTENT CONDITION diagnostic procedure. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
3.VISUAL INSPECTION
NOTE: Anything that affects the speed of the crankshaft can cause this DTC to set.
1. Inspect the engine for any of the following conditions:
•Worn serpentine belt
•Misalignment or binding water pump, P/S pump or A/C Compressor pulleys
•Improper CKP, CMP, or MAP mounting
•Poor connector/terminal to component connection for CKP Sensor, CMP Sensor, MAP Sensor, Fuel Injector, Ignition Coil, etc.
•Vacuum leaks
•Restriction in the air induction or exhaust system
•Internal engine component malfunction
NOTE: Rough Idle may occur and may not be caused by component failure. Any of the following conditions can be the cause:
•Moisture on ignition system components
•Insufficient fuel
•Low quality fuel
•Manual transmission bog
•Towing overload
Were any problems found?
Yes
•Repair as necessary.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
•Go To 4
4.MAP SENSOR OPERATION
1. Turn the ignition on.
2. With a scan tool, read the Barometric Pressure.
NOTE: The Barometric Pressure should be approximately equal to the actual barometric pressure.
3. Turn the ignition off.
4. Connect a Vacuum Gauge to a Manifold Vacuum source.
WARNING:
When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
5. Start the engine.
6. Allow the engine to idle.
NOTE: If engine will not idle, maintain a constant rpm above idle.
7. With the scan tool, read the MAP Sensor vacuum value.
NOTE: If necessary, compare the Barometric Pressure value of this vehicle to the value of a known good vehicle of a similar make and model.
Is the scan tool reading for MAP vacuum within 1 inch of Hg of the Vacuum Gauge and is the Barometric Pressure reading of the vehicle approximately the same as actual Barometric Pressure?
Yes
•Go To 5
No
•Verify that there is good pin to terminal contact in the MAP Sensor and Powertrain Control Module connectors. Replace the MAP Sensor if no problems were found with the connectors.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
5.CHECKING THE FUEL DELIVERY SYSTEM
1. Perform the CHECKING THE FUEL DELIVERY SYSTEM test procedure. (Refer to 29 - Non-DTC Diagnostics/Drivability - Gas - Diagnosis and Testing)
Were any problems found?
Yes
•Repair as necessary in accordance with the Service Information.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
•Go To 6
6.SPARK PLUG
1. Turn the ignition off.
2. Remove the Spark Plugs.
3. Inspect the Spark Plugs and Ignition Coils/Ignition cables for the following conditions:
•Cracks
•Carbon Tracking
•Foreign Material
•Spark Plug gap size out of specifications
•Loose or broken electrode
•Fouling
NOTE: Lightly tap the bottom of the spark plug on a solid surface. The electrode in the spark plug should not move.
Were any of the above conditions present?
Yes
•Replace the Spark Plugs. If a Spark Plug was found to have carbon tracking or was fouled, verify that the Ignition Coil is not damaged.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
•Go To 7
7.ENGINE MECHANICAL
1. Check for any of the following conditions/mechanical problems:
•ENGINE VACUUM - must be at least 13 inches in neutral
•ENGINE VALVE TIMING - must be within specifications
•ENGINE COMPRESSION - must be within specifications
•ENGINE EXHAUST SYSTEM - must be free of any restrictions or leaks.
•ENGINE PCV SYSTEM - must flow freely
•TORQUE CONVERTER STALL SPEED - must be within specifications
•POWER BRAKE BOOSTER - no internal vacuum leaks
•FUEL - must be free of contamination
•CYLINDER LEAKAGE TEST - must be within specifications
Are there any engine mechanical problems?
Yes
•Repair as necessary.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
•Go To 8
8.POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the related Sensor, Coil, Injector and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the related Sensors, Coils, Injectors and the Powertrain Control Module connectors.
4. Perform any Service Bulletins that may apply.
Were there any problems found?
Yes
•Repair as necessary.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
•Replace and program the Powertrain Control Module in accordance with the Service Information.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
I forgot to say the 2016 dart with 2.4 engine has only 17,000 miles , I could think to rule out engine mechanical problem , I swill think to start looking at O2 sensor as to experience problems in past with low milage dodge 2003 , last year of the 318 engine , TY again aplinegreenneon sincerely Ken
Most likely not, you would have an O2 sensor code. If you only have 17,000 miles, you are probably doing a lot of short trips and not letting the cold start carbon build up to ever burn off. Also possible if you let it sit long periods without running, your oil is draining out of the MultiAir brick. These engines were meant to run, not sit.
yes , I completely agree almost all engines are better to be run , the only exception I can think of that is of my small fleet of vehicles likes the I have that can take more abuse from sitting , a 1953 willeys jeep. I had taken a look around the Dart engine bay yesterday and could not see anything obvious as to deteriorated hoses or wires , from the helpful explain you gave , I will just try to erase the code and give the car a 50 to 60 mile drive and see how that works , TY , again , sincerely Ken.
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