# Service bulletin 18\-024\-19 REV. C

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: 10169221
- Published by NHTSA: 2019\-12\-16
- Manufacturer's number: 18\-024\-19 REV. C
- Manufacturer's date: 2019\-11\-01
- NHTSA component: POWER TRAIN; ELECTRICAL SYSTEM

## NHTSA's summary

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: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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10169221-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10169221-9999.pdf)

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

## Components

Electrical system, Transmission and driveline

## Trouble codes named

P0456, P06EF

## Vehicles listed

- 2019 JEEP CHEROKEE

## Recalls for the same vehicles and component

- [2026224](/recalls/tc/2026224.md), 2026-05-07: Powertrain
- [26V290000](/recalls/nhtsa/26V290000.md), 2026-05-07: POWER TRAIN
- [2025012](/recalls/tc/2025012.md), 2025-01-16: Powertrain
- [25V011000](/recalls/nhtsa/25V011000.md), 2025-01-16: POWER TRAIN
- [18V917000](/recalls/nhtsa/18V917000.md), 2018-12-20: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [18V739000](/recalls/nhtsa/18V739000.md), 2018-10-19: POWER TRAIN:AUTOMATIC TRANSMISSION
- [2018422](/recalls/tc/2018422.md), 2018-08-09: Powertrain
- [18V524000](/recalls/nhtsa/18V524000.md), 2018-08-09: ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD
- [18V492000](/recalls/nhtsa/18V492000.md), 2018-07-26: POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [03\-002\-26](/bulletins/11035039.md), 2026-07-18, Service bulletin: ENGINE; ELECTRICAL SYSTEM. Stop/Start Illuminated, 0x22 During Fork Wear Routine Technicians may experience the following: SYMPTOM: ● Negative response 0X22 after Recall 01C flash triggers one or more communication codes with controllers.
- [03\-001\-26](/bulletins/11035038.md), 2026-07-18, Service bulletin: POWER TRAIN. Unable to Complete 01C Recall Drive Cycle C14A7\-97 Active Technicians may experience the following: SYMPTOM: ● After performing Recall 01C, the vehicle may get a 'Service AWD' message on the EVIC.
- [S2523000003 REV.A](/bulletins/11031688.md), 2026-04-29, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Door Latch, Handle And Ajar Additional Service Information.
- [08\-075\-26 REV. A](/bulletins/11031423.md), 2026-04-22, Service bulletin: ELECTRICAL SYSTEM. Rear Taillamp Condensation Clearing Procedure On occasion, vehicle exterior taillamp assemblies get fogged with a light layer of condensation on the SYMPTOM: inside of the lenses Fig. 1. This may be reported after the lamps have been turned on and brought up to operating temperature, turned off and then rapidly cooled by cold water \(such as rain, or the water from a vehicle wash\). Lens fogging can also occur under certain atmospheric conditions after a vehicle has been parked outside overnight \(i.e. a warm humid day followed by clear cool night\). This will usually clear as atmospheric conditions change to allow the condensation to change back into a vapor. Turning the taillamps on will usually accelerate this process. This bulletin is to communicate the procedure for rear taillamp condensation clearing.
- [14082](/bulletins/11031348.md), 2026-04-15, Warranty extension: POWER TRAIN. \(XX1\) Two Speed Power Transfer Unit \(PTU\) \- Select 2017 \- 2019 Jeep Cherokee \(KL\)
- [14081](/bulletins/11031347.md), 2026-04-15, Warranty extension: POWER TRAIN. \(XX1\) Two Speed Power Transfer Unit \(PTU\) \- Select 2017 \- 2019 Jeep Cherokee \(KL\)
- [14079](/bulletins/11031346.md), 2026-04-15, Warranty extension: POWER TRAIN. \(XX1\) Two Speed Power Transfer Unit \(PTU\) \- Select 2017 \- 2019 Jeep Cherokee \(KL\)
- [14078](/bulletins/11031345.md), 2026-04-15, Warranty extension: POWER TRAIN. \(XX1\) Two Speed Power Transfer Unit \(PTU\) \- Select 2017 \- 2019 Jeep Cherokee \(KL\)
- [111447](/bulletins/11031344.md), 2026-04-15, Warranty extension: POWER TRAIN. ID\-26\-19 \(XX1\) Two Speed Power Transfer Unit \(PTU\) \- Select 2017 \- 2019 Jeep Cherokee \(KL\)
- [111432](/bulletins/11031343.md), 2026-04-15, Warranty extension: POWER TRAIN. D\-26\-10 \(XX1\) Two Speed Power Transfer Unit \(PTU\) \- Select 2017 \- 2019 Jeep Cherokee \(KL\)

JSON: [/v1/bulletins/10169221](/v1/bulletins/10169221)

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