WenmarOpen by Wenmar Pro

Service bulletin 1801515

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10229210
Published by NHTSA2023-01-09
Manufacturer's number1801515
Manufacturer's date2015-02-28
NHTSA componentEXTERIOR LIGHTING

NHTSA's summary

Malfunction Indicator Lamp (MIL) Illumination And/Or Intermittent No Crank No Start This bulletin involves inspecting the Charge Air Cooler (CAC) system for excessive water and/or ice and drying the CAC components if needed. It also involves installing a winter front cover.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Lighting

Vehicles listed
RAM 15002014, 2015

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
S20250000012024-01-02. Service bulletin. Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.
S20250000012023-04-17. Service bulletin. Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.
R512022-12-19. Service bulletin. Customer Satisfaction Notification R51 Winter Front Cover The Charge Air Cooler (CAC) on about 8,000 of the above vehicles may develop internal icing in cold temperature regions. This condition may cause the Malfunction Indicator Light (MIL) to illuminate and cause the vehicle to experience a 35 mph limp in condition. A winter front cover must be installed when sustained day and night time temperatures drop below 30° F (-1° C).
S16250000052022-10-17. Service bulletin. (Rev. A) Malfunction Indicator Light (MIL) Illuminated. Service Diesel Exhaust Fluid (DEF) System ? See Dealer Soon Message on Electronic Vehicle Information Center (EVIC) Along With Possible Diagnostic Trouble Code (DTC) P241D - SCR Inducement - Forced Engine Shutdown.
S20250000012022-10-17. Service bulletin. (Rev. B) Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.
18-015-152022-09-26. Service bulletin. Malfunction Indicator Lamp (MIL) Illumination And/Or Intermittent No Crank No Start This bulletin involves inspecting the Charge Air Cooler (CAC) system for excessive water and/or ice and drying the CAC components if needed. It also involves installing a winter front cover. A small number of customers may experience a MIL illumination when ambient temperatures fall below 32°F (0 °C). Upon further inspection, a technician may find the ? P0299 - Turbocharger Underboost Condition ? U1424 - Implausible Engine Torque Signal Received In addition, a customer vehicle may come in with a no crank/no start. This may have occurred after the vehicle has been driven for an extended period of time in extremely low ambient and then allowed to sit overnight. Further diagnosis may indicate a possible inoperative starter. A possible cause of these concerns may be contributed to internal icing of the Charge Air Cooler (CAC) system and intake manifold. Icing will occur because warm, moist air from the turbo charger is being rapidly cooled and the moisture is then condensed into liquid by the CAC. The liquid is then distributed into the rest of the intake system, which is operating at ambient temperature, where it will then freeze. Vehicles that are driven for extended periods of time are susceptible to higher amounts of ice build up within the intake manifold. Once the vehicle is turned off and allowed to sit, the ice formation in the intake will begin to melt due to the elevated underhood temperatures. The moisture will then run down the intake runners and accumulate in the combustion chamber through an open intake valve causing the engine to hydro-lock. To help prevent icing in the CAC system when the vehicle is operated in low ambient temperatures, it is highly recommended that the vehicle have winter front cover installed. This raises the CAC outlet temperatures above freezing which will help reduce condensation build up.
18073142022-09-26. Service bulletin. Flash: 3.0L Powertrain Diagnostic And System Enhancements EGR System And AC Compressor Relay Operation This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. The following powertrain system improvements/enhancements are included in this software release. ? Enhancements to improve A/C compressor relay duty cycle operation to prevent ignition off battery draw. ? Powertrain system improvements to enable EGR cleaning routine. ? Software to eliminate Malfunction Indicator Lamp (MIL) Illumination with no defect found for Diagnostic Trouble Code (DTC) P016A-00 - Excessive Time To Enter Closed Loop Air/Fuel Ratio Control.
1802814REVD2022-09-26. Service bulletin. Flash: MIL Illumination - Diagnostic and System Improvements Bulletin involves reprogramming the Powertrain Control Module (PCM) with latest available software. It also involves replacement of the Oxygen (O2) Sensor and cleaning or replacement of Exhaust Gas Temperature (EGT) Sensor 1/2 if necessary, depending on Diagnostic Trouble Codes (DTC) that may have set. A small number of customers may experience an intermittent engine shudder or vibration which may not set a Diagnostic Trouble Code (DTC) other customers may experience a Malfunction Indicator Lamp (MIL) illumination upon which technician may find one or more of following DTCs have been set: P016A-00 - Excessive Time To Enter Closed Loop Air/Fuel Ratio Control. P2459-00 - Diesel Particulate Filter Regeneration Frequency. P0133-00 - O2 Sensor 1/1 Slow Response. P2084-00 - Exhaust Gas Temperature Sensor Circuit Performance - (1/2). P0171-00 - Fuel System 1/1 Lean. P0426-00 - Catalyst Temperature Sensor Circuit Performance (1/1). P0045-00 - Turbocharger Boost Control Circuit/Open. P0087-00 - Fuel Rail Pressure Too Low. P009A-00 - Intake Air Temperature/Ambient Air Temperature Correlation. P0128-00 - Thermostat Rationality. P0234-00 - Turbocharger Overboost Condition. P0420-00 - Catalyst Efficiency (Bank 1). P05F8-00 - Reductant Heater Control Module Performance. P050E-00 - Cold Start Engine Exhaust Temperature Too Low. P200A-00 - Intake Manifold Runner Performance - (Bank 1). P200B-00 - Intake Manifold Runner Performance - (Bank 2). P202E-00 - Reductant Injection Valve Circuit Performance. P204F-00 - Reductant System Performance. P2080-00 - Exhaust Gas Temperature Sensor Circuit Performance. P20BA-00 - Reductant Heater 1 Control Circuit Performance. P20BE-00 - Reductant Pressure Line Heater Control Circuit Performance. P20C2-00 - Reductant Heater 3 Control Circuit Performance. P20E9-00 - Reductant Pressure Too High. P225C-00 - NOX Sensor 1/1 Performance - Signal Stuck High.
1802514REVA2022-09-26. Service bulletin. Flash: Powertrain System Improvements/Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. The following powertrain system improvements/enhancements are included in this software release. These enhancements are listed by vehicle application.DS vehicles equipped with a 3.6L engine (sales code ERB). Enhanced Automatic Oil Change Indicator(EAOCI) system improvements to switch to a severe duty cycle algorithm anytime the PCM is replaced to ensure the customer receives a timely oil change required message. Corrected a generic scan tool display issue regarding Mode 6 data accuracy.DS vehicles equipped with a 5.7L engine (sales code EZH). Charging system voltage regulator control improvements. System improvements to prevent Malfunction Indicator Lamp (MIL) illumination with a Diagnostic Trouble Code (DTC) P0300 - Multiple Cylinder Misfire when using a block heater in ambient temperatures greater than -20°F (-29°C). Enhanced Automatic Oil Change Indicator(EAOCI) system improvements to switch to a severe duty cycle algorithm anytime the PCM is replaced to ensure the customer receives a timely oil change required message. Corrected a generic scan tool display issue regarding Mode 6 data accuracy.DJ, DD, and D2 vehicles equipped with a 5.7L engine (sales code EZC) Transmission torque management enhancement when shifting from drive to reverse. Software to correct Malfunction Indicator Lamp (MIL) illumination with Diagnostic Trouble Code (DTC) P0481 - Cooling Fan 2 Control Circuit/Open setting in the PCM memory. Enhanced Automatic Oil Change Indicator(EAOCI) system improvements to switch to a severe duty cycle algorithm anytime the PCM is replaced to ensure the customer receives a timely oil change required message. Corrected a generic scan tool display issue regarding Mode 6 data accuracy. Improved transmission Quick Learn routine performance
2100314REVA2022-09-26. Service bulletin. Flash: 845RE Transmission Shift Enhancements, 2-1 Downshift This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. The following TCM calibration improvements are available for vehicles equipped an 845RE Automatic Transmission (Sales Code DFL). These updates are listed by vehicle and engine.LD and LX vehicles equipped with a 3.6L engine (Sales Code ERB) Software to correct a harsh bump feel during a 2-1 downshift. Software to enable the scan tool based transmission ?Quick Learn.? Software to address customer concerns of Malfunction Indicator Lamp (MIL) illumination and Diagnostic Trouble Code (DTC) P215C Output Shaft Speed, Wheel Speed Correlation setting on AWD equipped vehicles.LX and WK vehicles equipped with a 3.0L engine (Sales Code EHD) Software to correct a harsh bump feel during a 2-1 downshift.WK vehicles equipped with a 3.6L engine (Sales Code ERB) Software to correct a harsh bump feel during a 2-1 downshift.DS vehicles equipped with 3.6L engine (Sales Code ERB)