Technical Service Bulletin 1806823 — 2020 RAM 4500
EXTERIOR LIGHTING
Bulletin Details
| TSB ID | 1806823 |
| Manufacturer | |
| Vehicle | 2020 RAM 4500 |
| Component | EXTERIOR LIGHTING |
| Communication Date |
Bulletin Summary
Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P1404 - EGR Position Sensor Rationality Closed. ? P2457 - Exhaust Gas Recirculation Cooling System Performance. NOTE: P1404 - EGR Position Sensor Rationality Closed DTC can be erroneously set when P2457 -Exhaust Gas Recirculation Cooling System Performance DTC is set. In addition, the customer may notice one or more of the following conditions: ? **Power Take Off (PTO) disable to high engine oil temperature (DD DP with DF3 Only).** ? In PTO mode, transmission gear engagement is abrupt and idle speed is high when transitioning From Park To Drive/Reverse Gear. This bulletin involves reprogramming the PCM with the latest available software.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2020 RAM 4500
9100678
ENGINE
9100642
POWER TRAIN
9100500
ELECTRICAL SYSTEM
S2208000153 REV.B
ELECTRICAL SYSTEM
99400
SERVICE BRAKES
1800824
POWER TRAIN
1800824
PARKING BRAKE
1800824
FUEL SYSTEM, DIESEL
S2109000011
ENGINE AND ENGINE COOLING
08-022-23
BACK OVER PREVENTION:SOFTWARE