# Service bulletin 24\-001\-20

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.

- Type: Service bulletin
- NHTSA id: 10184775
- Published by NHTSA: 2020\-12\-28
- Manufacturer's number: 24\-001\-20
- Manufacturer's date: 2020\-11\-25
- NHTSA component: EQUIPMENT:APPLIANCE:AIR CONDITIONER

## NHTSA's summary

HVAC Housing Service This bulletin informing the Technician about an HVAC housing redesign with components that need to be serviced together when servicing the HVAC housing. Customers may experience the following: Poor Air conditioning system performance \(Slow or excess time to cool down\). HVAC is slow to cool, left center instrument panel outlet is warmer than right side instrument panel outlets.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10184775-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10184775-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Equipment and accessories, Heating and air conditioning

## Vehicles listed

- 2019 to 2020 RAM 1500
- 2019 to 2020 RAM 2500
- 2019 to 2020 RAM 3500
- 2019 to 2020 RAM 4500

## Recalls for the same vehicles and component

- [19V051000](/recalls/nhtsa/19V051000.md), 2019-01-24: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

## Other bulletins for the same vehicles and component

- [1800824](/bulletins/10251873.md), 2024-03-18, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; EQUIPMENT; PARKING BRAKE; BACK OVER PREVENTION; FUEL SYSTEM, GASOLINE; SERVICE BRAKES, HYDRAULIC; FUEL SYSTEM, DIESEL; EXTERIOR LIGHTING; POWER TRAIN; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\). Flash: Powertrain Control Module \(PCM\) Updates 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 \(DTCs\) have been set: P0506\-00 \- Idle Control System RPM \- Lower Than Expected.P0607\-00 \- ECU Internal Performance. P20E8\-00 \- Reductant Pressure Too Low. P0301\-00 \- Cylinder 1 Misfire. P0302\-00 \- Cylinder 2 Misfire. P0303\-00 \- Cylinder 3 Misfire. P0304\-00 \- Cylinder 4 Misfire. P0305\-00 \- Cylinder 5 Misfire. P0306\-00 \- Cylinder 6 Misfire. P0299\-00 \- Turbocharger Underboost. P1D73\-00 \- AGS Performance. P0626 \- Generator Field Control Circuit High. P218F \- Reductant No Flow Detected. P2002 \- Diesel Particulate Filter Efficiency Below Threshold. P24A5 \- EGR Cooler Bypass Bank 1 Control Stuck. P0191 \- Fuel Rail Pressure Sensor Circuit Performance. P0461 \- Fuel Level Sensor 1 Performance. P0401 \- EGR System Performance. P20EE \- SCR NOx Catalyst Efficiency Below Threshold \- Bank 1. P061A \- Level 2 Torque Performance. P061B \- Internal Control Module Torque Calculation Performance. P061E \- Internal Control Module Brake Signal Performance. P062C \- ETC Level 2 MPH Performance. P0106 \- Manifold Absolute Pressure Sensor Performance \(In extreme cold ambient temperatures\). P0116 \- Engine Coolant Temperature Sensor Performance. P0420 \- Catalyst System Efficiency Bank 1. P1507 \- Crankcase Filter Restriction. P203F \- Reductant Level Too Low. P226C \- Turbocharger Boost Control ?A? Slow Response \(In extreme cold ambient temperatures\). P2579 \- Turbocharger Speed Sensor Circuit. U0101 \- Lost Communication with TCM. U02A3 \- Lost of Communication with PM Sensor. U3017 \- Control Module Timer/Clock Performance. Customers may also experience one or more of the following Power
- [1800724](/bulletins/10251872.md), 2024-03-18, Service bulletin: POWER TRAIN; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\); BACK OVER PREVENTION; EXTERIOR LIGHTING; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC; FUEL SYSTEM, GASOLINE; EQUIPMENT; FUEL SYSTEM, DIESEL; PARKING BRAKE. Flash: Powertrain Control Module \(PCM\) Updates 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 \(DTCs\) have been set: P0506\-00 \- Idle Control System RPM \- Lower Than Expected. P0607\-00 \- ECU Internal Performance. P20E8\-00 \- Reductant Pressure Too Low. P0301\-00 \- Cylinder 1 Misfire. P0302\-00 \- Cylinder 2 Misfire. P0303\-00 \- Cylinder 3 Misfire. P0304\-00 \- Cylinder 4 Misfire. P0305\-00 \- Cylinder 5 Misfire. P0306\-00 \- Cylinder 6 Misfire. P0299\-00 \- Turbocharger Underboost. P1D73\-00 \- AGS Performance. P0626 \- Generator Field Control Circuit High. P218F \- Reductant No Flow Detected. P2002 \- Diesel Particulate Filter Efficiency Below Threshold. P24A5 \- EGR Cooler Bypass Bank 1 Control Stuck. P0191 \- Fuel Rail Pressure Sensor Circuit Performance. P0461 \- Fuel Level Sensor 1 Performance. P0401 \- EGR System Performance. P20EE \- SCR NOx Catalyst Efficiency Below Threshold \- Bank 1. P061A \- Level 2 Torque Performance. P061B \- Internal Control Module Torque Calculation Performance. P061E \- Internal Control Module Brake Signal Performance. P062C \- ETC Level 2 MPH Performance. P0106 \- Manifold Absolute Pressure Sensor Performance \(In extreme cold ambient temperatures\). P0116 \- Engine Coolant Temperature Sensor Performance. P0420 \- Catalyst System Efficiency Bank 1. P1507 \- Crankcase Filter Restriction. P203F \- Reductant Level Too Low. P226C \- Turbocharger Boost Control ?A? Slow Response \(In extreme cold ambient temperatures\). P2579 \- Turbocharger Speed Sensor Circuit. U0101 \- Lost Communication with TCM. U02A3 \- Lost of Communication with PM Sensor. U3017 \- Control Module Timer/Clock Performance.
- [S238A000028](/bulletins/10251795.md), 2024-03-18, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT. Radio Black Screen, Freezing, Reset, Cutting Out Or Inoperative Intermittently
- [S248A000001](/bulletins/10251785.md), 2024-03-18, Service bulletin: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. SOS and Assistance Call Not Working After Radio Exchange Unit Installed
- [93238](/bulletins/10248592.md), 2024-01-08, Service bulletin: EQUIPMENT. AISIN K1 SNAP RING REPLACEMENT
- [S1923000044](/bulletins/10248554.md), 2024-01-08, Service bulletin: STRUCTURE; EQUIPMENT. Dust Intrusion Or Air Leak Into Cab
- [Recall06A](/bulletins/10244433.md), 2023-10-30, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; EQUIPMENT:OTHER:LABELS. Emissions Recall 06A \- Vehicle Emission Control Information Label
- [93446](/bulletins/10244428.md), 2023-10-30, Service bulletin: EXTERIOR LIGHTING; EQUIPMENT. FCA Caribbean Warranty Bulletin ID\-23\-21 \(XL1\) Backlite Select 2019 \- 2021 RAM 1500 Pickup \(DT\)
- [93438](/bulletins/10244427.md), 2023-10-30, Service bulletin: EQUIPMENT. Warranty Bulletin D\-23\-17 \(XL1\) Backlite Select 2019 \- 2021 RAM 1500 Pickup \(DT\)
- [S2208000011](/bulletins/10244395.md), 2023-10-30, Service bulletin: EQUIPMENT:ELECTRICAL. Wireless Qi Charger Not Charging

JSON: [/v1/bulletins/10184775](/v1/bulletins/10184775)

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