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Service bulletin 18-045-20

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10176576
Published by NHTSA2020-06-22
Manufacturer's number18-045-20
Manufacturer's date2020-05-16
NHTSA componentENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience one or more of the following conditions: Reduced battery life. Intermittent Engine Stop/Start (ESS) operation.

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

Electrical system, Engine, Transmission and driveline, Automatic transmission

Vehicles listed
JEEP COMPASS2020

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
18060232023-07-31. Service bulletin. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination.
18096202022-10-17. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set:P24A4-00 - Diesel Particulate Filter - Soot Load.
S21250000022022-09-26. Service bulletin. Customer complaint includes a Mil-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM:
25003212022-09-26. Service bulletin. Flash: Dosing Control Unit (DCU) Updates This bulletin involves reprogramming the Dosing Control Unit (DCU) with the latest available software. The customer 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) or symptom/condition.P20F6-00 - Reductant Injection Valve Stuck Open Bank 1 Unit 1. P208E-00 - Reductant Injector Stuck Closed - Bank 1 Unit 1.
S21250000022022-05-31. Service bulletin. Customer complaint includes a Mil-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM:
18-096-20 REV. A2020-12-28. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination with limited vehicle acceleration. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set:P24A4-00 - Diesel Particulate Filter - Soot Load.
18-096-20 REV. A2020-12-21. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination with limited vehicle acceleration. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set:P24A4-00 - Diesel Particulate Filter - Soot Load.
18-102-202020-11-30. Service bulletin. Flash: Powertrain Diagnostic and System Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software.
18-096-202020-11-30. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set:P24A4-00 - Diesel Particulate Filter - Soot Load.
18-087-202020-10-26. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available 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)P2172 - High Airflow/Vacuum Leak Detected (Instantaneous Accumulation). Customer may also experience the following:An abnormal noise when the engine is in a cold condition. Irregular engine speed.