# Service bulletin 18\-088\-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: 10181624
- Published by NHTSA: 2020\-10\-26
- Manufacturer's number: 18\-088\-20
- Manufacturer's date: 2020\-09\-22
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

Flash: Dosing Control Unit \(DCU\) Updates This bulletin involves reprogramming the DCU 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 DTCs have been set:U05A3\-00 \- Invalid Data Received From Reductant Quality Module. P20F4\-00 \- Reductant Consumption Too Low. P20F5\-00 \- Reductant Consumption Too High. P208E\-00 \- Reductant Injector Stuck Closed \- Bank 1 Unit 1.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10181624-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10181624-9999.pdf)

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

## Components

Electrical system, Engine, Exhaust and emissions, Software

## Trouble codes named

P208E, P20F4, P20F5, U05A3

## Vehicles listed

- 2019 JEEP CHEROKEE

## Other bulletins for the same vehicles and component

- [BulletinA](/bulletins/10240002.md), 2023-07-31, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Customer Satisfaction Notification ZD7 \- Radio Software Update
- [08\-229\-22](/bulletins/10229805.md), 2023-01-17, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Over The Air Software Version Update to 22.66 This bulletin provides information regarding the latest Firmware Over The Air \(FOTA\) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from IR22.64 and IR22.65 to IR22.66. The national launch for the FOTA is expected to begin on January 09, 2023. ? Wi\-Fi hotspot connection not working. ? No internet connection message on the phone when trying to connect to a device
- [0809921](/bulletins/10212486.md), 2022-05-31, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. UAQ and UCQ Radio Enhancements This bulletin involves inspecting and if required, updating the radio software level to 39.5 Customers may experience one or more of the following: Intermittent, black radio display screen. Intermittent, radio freezes. Bluetooth® pairing and/or connection issues. Lost radio presets. Radio channels change by itself. SXM icon inoperative. In addition, the following enhancement are included in this update:Enables map updates.
- [W20 Combo](/bulletins/10187674.md), 2021-03-01, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. Customer Satisfaction Notification W20 Reprogram Powertrain Control Module
- [18\-063\-20 REV. B](/bulletins/10184473.md), 2020-12-21, Service bulletin: ENGINE; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT ADAPTIVE/MOBILITY. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM 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 \(DTCs\):P20EE\-00 \- SCR NOx Catalyst Efficiency Below Threshold Bank 1 Catalyst 1. P24B2\-00 \- Particulate Matter Sensor Circuit Intermittent. Customers may also describe the following condition:Engine Start/Stop inoperative. Remote start inoperative\(South Korea vehicles only\). Incorrect vehicle speed reported by the cluster when the driver changes the speed units. Undesirable pedal response in 4\-LO mode. Selective Catalytic Reduction \(SCR\) system fault codes logged at higher vehicle speeds. Alternator load protection at idle. Check Engine Lamp or low battery indicator
- [S2008000130](/bulletins/10180233.md), 2020-09-28, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Radio UConnect GPS Based Trip Computer Missing
- [S2008000010](/bulletins/10178642.md), 2020-08-24, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM. Apple Carplay Inoperative Or Not Working, Phone Not Pairing, Carplay Lockup, Freeze or Audio Concerns
- [S2008000073](/bulletins/10176540.md), 2020-06-22, Service bulletin: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. VP4 Panasonic Radio USB Software Update Error Codes And Guidelines For Recovery
- [18\-023\-20](/bulletins/10175155.md), 2020-05-18, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ENGINE AND ENGINE COOLING. 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 that the one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set:P0780 \- Gear Shift Malfunction. P050B \- Cold Start Ignition Timing Performance. P06EF \- Engine Restart Performance. P0456 \- EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test \(SLVT\) to determine if a leak is present in the system. Customers may also comment on one or more of the following:Extended engine crank times or possibly a no start condition\(South Korea with Sales Code EDD only\). The engine fails to restart while in Engine Stop/Start \(ESS\) mode. This is usually accompanied withDTC P06EF.

JSON: [/v1/bulletins/10181624](/v1/bulletins/10181624)

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