# Service bulletin 18\-056\-16

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: 10181479
- Published by NHTSA: 2020\-10\-26
- Manufacturer's number: 18\-056\-16
- Manufacturer's date: 2016\-05\-07
- NHTSA component: ENGINE; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION

## NHTSA's summary

Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest available software. The following powertrain system improvements/enhancements are included in this software release. These symptoms are broken down by vehicle: 2015 WK 3.0L engine \(Sales Code EHD\) · \*\* P0456 \- EVAP System Small Leak.\*\* · Enhancements to remote engine start. 2015 WK 5.7L engine \(Sales Code EZH\) · \*\* P0456 \- EVAP System Small Leak.\*\* · U0140\-00 \- Lost Communication with Body Control Module \(BCM\). · Enhancements to improve a slight lag or hesitation during Multi Displacement System \(MDS\) mode transitions. · Enhancements to improve a slight drop in engine RPM when the vehicle is shifted to reverse or drive within 3 seconds of a cold start. 2014 WD 5.7L engine \(Sales Code EZH\) · Enhancements to improve a slight drop in engine RPM when the vehicle is shifted to reverse or drive within 3 seconds of a cold start. 2015 WD 5.7L engine \(Sales Code EZH\) · \*\* P0456 \- EVAP System Small Leak.\*\* · Enhancements to remote engine start.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10181479-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10181479-9999.pdf)

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

## Components

Electrical system, Engine, Transmission and driveline, Automatic transmission

## Trouble codes named

P0456, U0140

## Vehicles listed

- 2014 to 2015 DODGE DURANGO
- 2015 JEEP GRAND CHEROKEE

## Recalls for the same vehicles and component

- [16V240000](/recalls/nhtsa/16V240000.md), 2016-04-25: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## Other bulletins for the same vehicles and component

- [2103914](/bulletins/10232023.md), 2023-02-21, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. Transmission Shift Enhancements
- [1806714](/bulletins/10232004.md), 2023-02-21, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN; ELECTRICAL SYSTEM. MIL Illumination, P1CF3 Battery Temperature Sensor Out of Range Low
- [S1709000010](/bulletins/10229031.md), 2023-01-09, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer complaints may include abnormal engine noise, rough idle, lack of power, misfire. Upon investigation, it may be found that there is excessive camshaft lobe wear/lifter wear \(roller failure\) on one or more cam lobes and that camshaft/lifter replacement is necessary.
- [V51](/bulletins/10228020.md), 2022-12-19, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); UNKNOWN OR OTHER. Customer Satisfaction Notification V51 Reprogram Powertrain Control Module
- [W41](/bulletins/10221748.md), 2022-09-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer Satisfaction Notification W41 Reprogram Powertrain Control Module
- [2102815](/bulletins/10220462.md), 2022-09-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. 8HP70 Tranmission shift enhancements.
- [18\-047\-15 REV. A](/bulletins/10216177.md), 2022-07-25, Service bulletin: EQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION; BACK OVER PREVENTION; ELECTRICAL SYSTEM. Flash: 3.0L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp \(MIL\) Illumination. Upon further investigation, a technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\) stored in the PCM memory. ? P204F\-00 \- Reductant System Performance ? P20E9\-00 \- Reductant Pressure Too High ? P249C\-00 \- Excessive Time To Enter Closed Loop Reductant Injection Control ? P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold ? P20C2\-00 \- Reductant Heater 3 Control Circuit Performance ? P2299\-00 \- Brake Pedal Position/Accelerator Pedal Position Incompatible ? P208B\-00 \- Reductant Pump 1 Control Performance ? P1288\-00 \- NOX Sensor 1/2 Zero Offset Too High
- [18\-070\-15](/bulletins/10216152.md), 2022-07-25, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT; ELECTRICAL SYSTEM. Flash: PCM Software Improvements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation a technician may find the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory. ? P0301\- Cylinder 1 Misfire ? P0302\- Cylinder 2 Misfire ? P0303\- Cylinder 3 Misfire ? P0304\- Cylinder 4 Misfire ? P0305\- Cylinder 5 Misfire ? P0306\- Cylinder 6 Misfire ? P0300\- Multiple Cylinder Misfire ? P0513\- Invalid SKIM Key
- [25\-002\-15 REV. A](/bulletins/10216146.md), 2022-07-25, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT ADAPTIVE/MOBILITY; FUEL SYSTEM, GASOLINE. P0455 And/Or P0456 Set In The PCM This bulletin involves replacing the evaporative emissions purge valve hose due to a split in the hose that will prevent the system from sealing. The customer may experience a Malfunction Indicator Lamp \(MIL\) while driving. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory. ? P0455 EVAP System Large Leak ? P0456 EVAP System Small Leak
- [9004509](/bulletins/10212248.md), 2022-05-31, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:FILTER/SCREEN. Oil Filter If a Mopar Oil Filter is not available, use a filter that meets or exceeds USCAR36 specification and is compatible with semi and full synthetic oils. Recommended Brands: Wix, Purolator, and NapaGold

JSON: [/v1/bulletins/10181479](/v1/bulletins/10181479)

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