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Service bulletins for the 2014 Chrysler 300

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

323 on file from NHTSA, as of 2026-10-19.

About P0300 on the 2014 Chrysler 300: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: P0300 are shown. Show all

Bulletins, newest first
18094162022-12-19. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Flash: Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience one or more of the following conditions: · With the cluster set on metric units, they are unable to accurately increase or decrease the cruise control set speed using the resume or set buttons. Instead of changing vehicle speed by 1 kph when pressing the buttons, the vehicle speed will increase approximately 1.6 kph. · Potential gear hunting during cruise operation at lower vehicle speeds 40-64 kph (25-40 mph). In addition, a small number of customers may experience certain symptoms/conditions or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Codes have been set: · **P1115 - General Temperature Rationality. · P0456 - EVAP System Small Leak. · P0441 - EVAP Purge System Performance. · P2610 - PCM Internal Engine Off Timer Performance. · P0300 - Multiple Cylinder Misfire. · P0301 - Cylinder 1 Misfire. · P0302 - Cylinder 2 Misfire. · P0303 - Cylinder 3 Misfire. · P0304 - Cylinder 4 Misfire. · P0305 - Cylinder 5 Misfire. · P0306 - Cylinder 6 Misfire. · P0307 - Cylinder 7 Misfire. · P0308 - Cylinder 8 Misfire. · P0335 - Crankshaft Position Sensor Circuit. · P0122 - Throttle Position Sensor 1 Circuit Low. · P0123 - Throttle Position Sensor 1 Circuit High. · P0222 - Throttle Position Sensor 2 Circuit Low. · P0223 - Throttle Position Sensor 2 Circuit High. · P2299 - Brake Pedal Position / Accelerator Pedal Position Incompatible.** · P2096 - Downstream Fuel Trim System 1 Lean. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). · P2097 - Downstream Fuel Trim System 1 Rich. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC).
18073202022-09-26. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs):U1424-00 - Implausible Engine Torque Signal Received(2015 MY). P0456 - EVAP System Small Leak. P2610 - PCM Internal Engine Off Timer Performance. P2299 - Brake Pedal Position / Accelerator Pedal Position Incompatible. P0335 - Crankshaft Position Sensor Circuit(2014-2015 MY). U0140 - Lost Communication With Body Control Module(LC, LD and LX). P1621 - O2 Sensor Reference Voltage Circuit Low. P1622 - O2 Sensor Reference Voltage Circuit High. P0606 - Internal Control Processor. P0300 - Multiple Cylinder Misfire. P219A - Bank 1 Air-Fuel Ratio Imbalance. P219B - Bank 2 Air-Fuel Ratio Imbalance. P0307 - Cylinder 7 Misfire. P2096 - Downstream Fuel Trim System 1 Lean. P2097 - Downstream Fuel Trim System 1 Rich. The following software enhancements are also available(2015 MY):Reverse gear lock-out change from 16 kph (10 mph) to 4.8 kph (3 mph)(Sales Code EZC with DEC). Change to purge vapor control calibration(Sales Code EZH with DGJ). Improvements to vehicle overspeed control(Sales Code EZH with DGJ). Calibration update to the electronic voltage regulator voltage set point(Sales Code EZH with DGJ). Additional Symptoms:Customers with a Pursuit Dodge Charger (LD) may describe an unpleasant odor in the vehicle under certain extreme ambient conditions2013-2015 MY LD with (Sales Codes EZH with AHB or AHV only). Technicians may find that the original vehicle Frequency Operated Button Integrated Key (FOBIK) does not function properly following replacement of the Wireless Ignition Node (WIN/WCM). The Secret Key information stored in the PCM may be corrupt. This update will restore the PCM?s ability to store/transfer valid Secret Key information
18094162022-09-19. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience one or more of the following conditions: · With the cluster set on metric units, they are unable to accurately increase or decrease the cruise control set speed using the resume or set buttons. Instead of changing vehicle speed by 1 kph when pressing the buttons, the vehicle speed will increase approximately 1.6 kph. · Potential gear hunting during cruise operation at lower vehicle speeds 40-64 kph (25-40 mph). In addition, a small number of customers may experience certain symptoms/conditions or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Codes have been set: · **P1115 - General Temperature Rationality. · P0456 - EVAP System Small Leak. · P0441 - EVAP Purge System Performance. · P2610 - PCM Internal Engine Off Timer Performance. · P0300 - Multiple Cylinder Misfire. · P0301 - Cylinder 1 Misfire. · P0302 - Cylinder 2 Misfire. · P0303 - Cylinder 3 Misfire. · P0304 - Cylinder 4 Misfire. · P0305 - Cylinder 5 Misfire. · P0306 - Cylinder 6 Misfire. · P0307 - Cylinder 7 Misfire. · P0308 - Cylinder 8 Misfire. · P0335 - Crankshaft Position Sensor Circuit. · P0122 - Throttle Position Sensor 1 Circuit Low. · P0123 - Throttle Position Sensor 1 Circuit High. · P0222 - Throttle Position Sensor 2 Circuit Low. · P0223 - Throttle Position Sensor 2 Circuit High. · P2299 - Brake Pedal Position / Accelerator Pedal Position Incompatible.** · P2096 - Downstream Fuel Trim System 1 Lean. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). · P2097 - Downstream Fuel Trim System 1 Rich. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC).
18-039-15 REV. A2022-08-08. Service bulletin. EQUIPMENT; EXTERIOR LIGHTING; POWER TRAIN; ELECTRICAL SYSTEM. Flash: 6.4L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module with the latest available software. A small number of customers may experience one or more of the following conditions: ? With the cluster set on metric units, they are unable to accurately increase or decrease the cruise control set speed using the resume or set buttons. Instead of changing vehicle speed by 1 KPH when pressing the buttons, the vehicle speed will increase approximately 1.6 KPH. ? Potential gear hunting during cruise operation at lower vehicle speeds (25-40 mph). In addition, a small number of customers with manual transmission equipped vehicles may experience certain symptoms/conditions or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Code has been set: ? P2096 - Downstream Fuel Trim System 1 Lean. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). ? P2097 - Downstream Fuel Trim System 1 Rich. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). ? P2098 - Downstream Fuel Trim System 2 Lean. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). ? P2099 - Downstream Fuel Trim System 2 Rich. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). ? P0300 - Multiple Cylinder Misfire (set during engine warm-up) (LC vehicles with Sales Code ESH with a manual transmission [Sales Code DEC]).
18-039-15 REV. A2022-07-25. Service bulletin. EXTERIOR LIGHTING; EQUIPMENT; POWER TRAIN; ELECTRICAL SYSTEM. Flash: 6.4L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module with the latest available software. A small number of customers may experience one or more of the following conditions: ? With the cluster set on metric units, they are unable to accurately increase or decrease the cruise control set speed using the resume or set buttons. Instead of changing vehicle speed by 1 KPH when pressing the buttons, the vehicle speed will increase approximately 1.6 KPH. ? Potential gear hunting during cruise operation at lower vehicle speeds (25-40 mph). In addition, a small number of customers with manual transmission equipped vehicles may experience certain symptoms/conditions or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Code has been set: ? P2096 - Downstream Fuel Trim System 1 Lean. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). ? P2097 - Downstream Fuel Trim System 1 Rich. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). ? P2098 - Downstream Fuel Trim System 2 Lean. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). ? P2099 - Downstream Fuel Trim System 2 Rich. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). ? P0300 - Multiple Cylinder Misfire (set during engine warm-up) (LC vehicles with Sales Code ESH with a manual transmission [Sales Code DEC]).
18-073-202020-09-28. Service bulletin. ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs):U1424-00 - Implausible Engine Torque Signal Received(2015 MY). P0456 - EVAP System Small Leak. P2610 - PCM Internal Engine Off Timer Performance. P2299 - Brake Pedal Position / Accelerator Pedal Position Incompatible. P0335 - Crankshaft Position Sensor Circuit(2014-2015 MY). U0140 - Lost Communication With Body Control Module(LC, LD and LX). P1621 - O2 Sensor Reference Voltage Circuit Low. P1622 - O2 Sensor Reference Voltage Circuit High. P0606 - Internal Control Processor. P0300 - Multiple Cylinder Misfire. P219A - Bank 1 Air-Fuel Ratio Imbalance. P219B - Bank 2 Air-Fuel Ratio Imbalance. P0307 - Cylinder 7 Misfire. P2096 - Downstream Fuel Trim System 1 Lean. P2097 - Downstream Fuel Trim System 1 Rich. The following software enhancements are also available(2015 MY):Reverse gear lock-out change from 16 kph (10 mph) to 4.8 kph (3 mph)(Sales Code EZC with DEC). Change to purge vapor control calibration(Sales Code EZH with DGJ). Improvements to vehicle overspeed control(Sales Code EZH with DGJ). Calibration update to the electronic voltage regulator voltage set point(Sales Code EZH with DGJ). Additional Symptoms:Customers with a Pursuit Dodge Charger (LD) may describe an unpleasant odor in the vehicle under certain extreme ambient conditions2013-2015 MY LD with (Sales Codes EZH with AHB or AHV only). Technicians may find that the original vehicle Frequency Operated Button Integrated Key (FOBIK) does not function properly following replacement of the Wireless Ignition Node (WIN/WCM). The Secret Key information stored in the PCM may be corrupt. This update will restore the PCM?s ability to store/transfer valid Secret Key information
18-052-15 REV A2019-05-20. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. Flash: 5.7L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience one or more of the following symptoms or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) set in the Powertrain Control Module (PCM): ? U0140 - Lost Communication With Body Control Module (LD and LX). ? U0140 - Lost Communication With Body Control Module (TIPM) stored in the Engine Control Module (ECM) memory (LC vehicles). ? P1621 - O2 Sensor Reference Voltage Circuit Low. ? P1622 - O2 Sensor Reference Voltage Circuit High. ? P0606 - Internal Control Processor. ? P219A - Air-Fuel Ratio Cylinder Imbalance Bank 1. ? P0300 - Multiple Cylinder Misfire (applies only to vehicles using a block heater in ambient temperatures greater than -20°F (-29°C). ? Technicians may find that the original vehicle Frequency Operated Button Integrated Key (FOBIK) does not function properly following replacement of the Wireless Ignition Node (WIN/WCM). The Secret Key information stored in the PCM may be corrupt. This update will restore the PCM?s ability to store/transfer valid Secret Key information (LC vehicles). ? Accuracy improvements for the Automatic Oil Change Indicator (AOCI) system.
18-039-15 REV-A2018-12-17. Service bulletin. ENGINE; POWER TRAIN. Flash: 6.4L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module with the latest available software. A small number of customers may experience one or more of the following conditions: ? With the cluster set on metric units, they are unable to accurately increase or decrease the cruise control set speed using the resume or set buttons. Instead of changing vehicle speed by 1 KPH when pressing the buttons, the vehicle speed will increase approximately 1.6 KPH. ? Potential gear hunting during cruise operation at lower vehicle speeds (25-40 mph). In addition, a small number of customers with manual transmission equipped vehicles may experience certain symptoms/conditions or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Code has been set: ? P2096 - Downstream Fuel Trim System 1 Lean. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). ? P2097 - Downstream Fuel Trim System 1 Rich. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). ? P2098 - Downstream Fuel Trim System 2 Lean. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). ? P2099 - Downstream Fuel Trim System 2 Rich. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). ? P0300 - Multiple Cylinder Misfire (set during engine warm-up) (LC vehicles with Sales Code ESH with a manual transmission [Sales Code DEC]).
18-052-152018-12-03. Service bulletin. ENGINE AND ENGINE COOLING. Flash: 5.7L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience one or more of the following symptoms or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more Dagnostic Trouble Codes (DTCs). ? DTC: U0140 - Lost Communication With Body Control Module (TIPM) stored in the Engine Control Module (ECM) memory (applies only to LC vehicles). ? DTC: P1621 - O2 Sensor Reference Voltage Circuit Low ? DTC: P1622 - O2 Sensor Reference Voltage Circuit High ? DTC: P0606 - Internal Control Processor ? DTC: P219A - Air-Fuel Ratio Cylinder Imbalance Bank 1 ? P0300 - Multiple Cylinder Misfire (applies only to vehicles using a block heater in ambient temperatures greater than -20°F (-29°C)) ? Technicians may find that the original vehicle Frequency Operated Button Integrated Key (FOBIK) does not function properly following replacement of the Wireless Ignition Node (WIN/WCM). The Secret Key information stored in the PCM may be corrupt. This update will restore the PCM?s ability to store/transfer valid Secret Key information (applies only to LC vehicles). ? Accuracy improvements for the Automatic Oil Change Indicator (AOCI) system.
18-039-152018-11-26. Service bulletin. ELECTRICAL SYSTEM. Flash: 6.4L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module with the latest available software. A small number of customers may experience one or more of the following conditions. ? With the cluster set on metric units, they are unable to accurately increase or decrease the cruise control set speed using the resume or set buttons. Instead of changing vehicle speed by 1 KPH when pressing the buttons, the vehicle speed will increase approximately 1.6 KPH. ? Potential gear hunting during cruise operation at lower vehicle speeds (25-40mph). ? The generator indicator light may be illuminated on the instrument cluster even though the generator is properly charging. In addition, a small number of customers with manual transmission equipped vehicles, may experience certain symptom/conditions or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Code has been set: ? P2096 - Downstream Fuel Trim System 1 Lean. (LC vehicles with sales code ESH with a manual transmission (sales code DEC). ? P2097 - Downstream Fuel Trim System 1 Rich. (LC vehicles with sales code ESH with a manual transmission (sales code DEC). ? P2098 - Downstream Fuel Trim System 2 Lean. (LC vehicles with sales code ESH with a manual transmission (sales code DEC). ? P2099 - Downstream Fuel Trim System 2 Rich. (LC vehicles with sales code ESH with a manual transmission (sales code DEC). ? P0300 - Multiple Cylinder Misfire (set during engine warm-up) (LC vehicles with sales code ESH with a manual transmission (sales code DEC).
18-094-162018-06-11. Service bulletin. EXTERIOR LIGHTING; BACK OVER PREVENTION; EQUIPMENT; POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience one or more of the following conditions: With the cluster set on metric units, they are unable to accurately increase or decrease the cruise control set speed using the resume or set buttons. Instead of changing vehicle speed by 1 kph when pressing the buttons, the vehicle speed will increase approximately 1.6 kph. Potential gear hunting during cruise operation at lower vehicle speeds 40-64 kph (25-40 mph). In addition, a small number of customers may experience certain symptoms/conditions or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Codes have been set: P1115 - General Temperature Rationality. P0456 - EVAP System Small Leak. P0441 - EVAP Purge System Performance. P2610 - PCM Internal Engine Off Timer Performance. P0300 - Multiple Cylinder Misfire. P0301 - Cylinder 1 Misfire. P0302 - Cylinder 2 Misfire. P0303 - Cylinder 3 Misfire. · P0304 - Cylinder 4 Misfire. · P0305 - Cylinder 5 Misfire. · P0306 - Cylinder 6 Misfire. · P0307 - Cylinder 7 Misfire. · P0308 - Cylinder 8 Misfire. · P0335 - Crankshaft Position Sensor Circuit. · P0122 - Throttle Position Sensor 1 Circuit Low. · P0123 - Throttle Position Sensor 1 Circuit High. · P0222 - Throttle Position Sensor 2 Circuit Low. · P0223 - Throttle Position Sensor 2 Circuit High. · P2299 - Brake Pedal Position / Accelerator Pedal Position Incompatible.** · P2096 - Downstream Fuel Trim System 1 Lean. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). · P2097 - Downstream Fuel Trim System 1 Rich. (LC vehicles with Sales Code ESH with a manual transmission (Sales Code DEC). · P2098 - Downstream Fuel Trim System 2 Lean. (LC vehicles with Sales Code ESH with a ma
18-015-142018-05-21. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Flash: Malfunction Indicator Lamp (MIL) Illumination. Includes Various Driveability Improvements This bulletin involves selectively erasing and 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 that the following Diagnostic Trouble Codes have been set: P0300 - Multiple Cylinder MisfireThe P0300 improvement only applies to vehicles using a block heater in ambient temperatures greater than -20°F(-29°C). P0606 - Internal Control Processor P219A - Air-Fuel Ratio Cylinder Imbalance Bank 1This release also contains the following improvements: (applies only to LC vehicles) Accuracy improvements for the Automatic Oil Change Indicator (AOCI) system.
18-084-162017-11-03. Service bulletin. POWER TRAIN; STRUCTURE; ELECTRICAL SYSTEM. Flash: 5.7L Diagnostic And System Improvements This bulletin involves reprogramming of the Powertrain Control Module (PCM) with the latest software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs): · **P0456 - Evap System Small Leak. · P2610 - PCM Internal Engine Off Timer Performance. · P2299 - Brake Pedal Position / Accelerator Pedal Position Incompatible. · P0335 - Crankshaft Position Sensor Circuit. (2014-2015 MY).** · U0140 - Lost Communication With Body Control Module. (LC, LD and LX). · P1621 - O2 Sensor Reference Voltage Circuit Low. · P1622 - O2 Sensor Reference Voltage Circuit High. · P0606 - Internal Control Processor. · P0300 - Multiple Cylinder Misfire. · P219A - Bank 1 Air-Fuel Ratio Imbalance. · P219B - Bank 2 Air-Fuel Ratio Imbalance. · P0307 - Cylinder 7 Misfire. · P2096 - Downstream Fuel Trim System 1 Lean. · P2097 - Downstream Fuel Trim System 1 Rich.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.