# Service bulletin 18\-049\-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: 10176589
- Published by NHTSA: 2020\-06\-22
- Manufacturer's number: 18\-049\-20
- Manufacturer's date: 2020\-05\-27
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT; SERVICE BRAKES, HYDRAULIC; ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE

## 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 one or more of the following DTCs have been set:P06EF \- Engine Restart Performance\(3.0L and 3.6L Only\). P0556 \- Brake Booster Pressure Sensor Circuit Performance. P040B \- Exhaust Gas Recirculation Temperature Sensor 1 Circuit Performance\(3.6L Only\). U1424 \- Implausible Engine Torque Signal Received\(2017 MY Only\). P2681 \- Engine Coolant Bypass Valve Control Circuit Open\(3.6L Only\). P2299 \- Brake Pedal Position/Accelerator Pedal Position Incompatible. B23C3 \- Stop/Start Disable Switch 1/2 Correlation\(3.0L and 3.6L Only\). The following DTCs have been changed from a one trip fault to a two trip fault for\(3.0L and 3.6L Only\):P0335 \- Crankshaft Position Sensor Circuit. P0339 \- Crankshaft Position Sensor Intermittent. P0340 \- Camshaft Position Sensor Circuit \- Bank 1 Sensor 1. P0344 \- Camshaft Position Sensor Intermittent \- Bank 1 Sensor 1. P0365 \- Camshaft Position Sensor Circuit \- Bank 1 Sensor 2. P0369 \- Camshaft Position Sensor Intermittent \- Bank 1 Sensor 2. P0345 \- Camshaft Position Sensor Circuit \- Bank 2 Sensor 1. P0349 \- Camshaft Position Sensor Intermittent \- Bank 2 Sensor 1. P0390 \- Camshaft Position Sensor Circuit \- Bank 2 Sensor 2. P0394 \- Camshaft Position Sensor Intermittent \- Bank 2 Sensor 2. In addition, customers may experience one or more of the following conditions:A shorter auxiliary battery life. An illuminated Automatic Oil Change Indication \(AOCI\) light\(3.6L Only\). Other enhancements included in this update:Improvements to vehicle drivability during a cam or crank sensor MIL condition\(2017 MY Only\). Improved knock sensor performance.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176589-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176589-9999.pdf)

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

## Components

Brakes, Engine, Equipment and accessories, Fuel system, Transmission and driveline, Automatic transmission, Transmission control module

## Trouble codes named

B23C3, P0335, P0339, P0340, P0344, P0345, P0349, P0365, P0369, P0390, P0394, P040B, P0556, P06EF, P2299, P2681, U1424

## Vehicles listed

- 2016 to 2017 DODGE DURANGO
- 2016 to 2017 JEEP GRAND CHEROKEE

## Recalls for the same vehicles and component

- [16V249000](/recalls/nhtsa/16V249000.md), 2016-04-27: EXTERIOR LIGHTING:BRAKE LIGHTS:SWITCH; POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH

## Other bulletins for the same vehicles and component

- [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.
- [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
- [S1925000008](/bulletins/10214560.md), 2022-06-27, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Malfunction Indicator Lamp \(MIL\) Illumination. Diagnostic Trouble Codes \(DTCs\) P208B ? Reductant Pump 1 Control Performance, and/or P20E8 ? Reductant Pressure Too Low, Set.
- [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
- [S2025000001 Rev.](/bulletins/10184701.md), 2020-12-28, Service bulletin: EXTERIOR LIGHTING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT. \(Rev. B\) Malfunction Indicator Lamp Illumination \(MIL\). Diagnostic Trouble Code \(DTC\) P203E ? Reductant Level Sensor 1 Circuit Intermittent\-Erratic Set.
- [S1925000008 Rev.](/bulletins/10184406.md), 2020-12-21, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ENGINE; FUEL SYSTEM, DIESEL. \(Rev. B\) Malfunction Indicator Lamp \(MIL\) Illumination. Diagnostic Trouble Codes \(DTCs\) P20E8 ? Reductant Pressure Too Low and/or P208B ? Reductant Pump 1 Control Performance Set.
- [S2025000001 Rev.](/bulletins/10184401.md), 2020-12-21, Service bulletin: ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). \(Rev. B\) Malfunction Indicator Lamp Illumination \(MIL\). Diagnostic Trouble Code \(DTC\) P203E ? Reductant Level Sensor 1 Circuit Intermittent\-Erratic Set.
- [W41 Combo](/bulletins/10178675.md), 2020-08-24, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer Satisfaction Notification W41 Reprogram Powertrain Control Module
- [9003669](/bulletins/10139980.md), 2018-06-11, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. Auto Trans Rotary Electronic Shifter The rotary shifter is designed to actuate a motor within the device whenever the driver places their foot on the brake, with the car in Park \(or Neutral\). This generates a noise with each brake press/release. Therefore, even after replacing the shifter for a noise complaint, the replacementpart will also have a characteristic noise generated whenever the driver steps on the brake. Before performing a repair procedure for a noise complaint, please perform a subjective analysis of the noise coming from the rotary shifter. If the shifter noise is deemed abnormal sound \(has an uncharacteristic buzz or grind\), please proceed with normal replacement procedure. If so equipped, record the sound with a handheld microphone, or cell phone, and if noise is above 54dB @ 30cm away from the knob, please proceed with normal replacement procedure. For any further questions, please contact Theodore Kahiya at cell \(519\) 300\-2443.
- [18\-078\-16 REV. A](/bulletins/10136534.md), 2018-05-14, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN:AUTOMATIC TRANSMISSION. Engine Oil Viscosity Upgrade And Flash Enhancements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) and the Transmission Control Module \(TCM\). It also involves changing the engine oil with new 5W40 engine oil and applying a sticker to the engine oil filler cap. An addendum card will need to be added in the owner's manual. The following powertrain system improvements/enhancements are included in this software release: · Fan calibration. · Transmission calibration. · Revised oil change algorithm.

JSON: [/v1/bulletins/10176589](/v1/bulletins/10176589)

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