# Service bulletin 18\-053\-20 REV. B

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: 10181644
- Published by NHTSA: 2020\-10\-26
- Manufacturer's number: 18\-053\-20 REV. B
- Manufacturer's date: 2020\-09\-30
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## 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 ofthe following Diagnostic Trouble Codes \(DTCs\).P0300 \- Multiple Cylinder Misfire. P258B \- Electronic Vacuum Pump Performance. C1252\-92 \- Vacuum Pump Control Circuit \- Performance Or Incorrect Operation. 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. P1404 \- EGR Close Position Performance. P1206 \- Fuel Pump Control Module Open Circuit To Fuel Pump. Upon diagnosing the vehicle the technician may find DTC P1206 set before flashing the vehicle, the correct DTC will nowbe P025A \- Fuel Pump Module Control Circuit Open after the software update.In addition the customer may notice one or more of the following: The Anti\-Lock Brake System \(ABS\) light illuminates. The customer may notice an ability to shift into 1st gear at an unsafespeed\(MTX Only\). Cluster displays "Autopark Engaged" even when autopark is no longer active.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10181644-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10181644-9999.pdf)

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

## Components

Transmission and driveline, Automatic transmission, Transmission control module

## Trouble codes named

C1252, P025A, P0300, P0456, P1206, P1404, P258B

## Vehicles listed

- 2020 JEEP GLADIATOR

## Other bulletins for the same vehicles and component

- [S2325000006](/bulletins/10241022.md), 2023-08-21, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer complaint may include a MIL\-on or check engine lamp on condition.
- [1805320](/bulletins/10221761.md), 2022-09-26, Service bulletin: EXTERIOR LIGHTING; FUEL SYSTEM, GASOLINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); AIR BAGS; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. 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 ofthe following DTCs.P0300 \- Multiple Cylinder Misfire. P258B \- Electronic Vacuum Pump Performance. C1252\-92 \- Vacuum Pump Control Circuit \- Performance Or Incorrect Operation. 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. P1404 \- EGR Close Position Performance. P1206 \- Fuel Pump Control Module Open Circuit To Fuel Pump. Upon diagnosing the vehicle the technician may find DTC P1206 set before flashing the vehicle, the correct DTC will now be P025A \- Fuel Pump Module Control Circuit Open after the softwareupdate.In addition the customer may notice one or more of the following: The Anti\-Lock Brake System \(ABS\) light illuminates. The customer may notice an ability to shift into 1st gear at an unsafespeed\(MTX Only\). Cluster displays "Autopark Engaged" even when autopark is no longer active.
- [S2125000002](/bulletins/10221288.md), 2022-09-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer complaint includes a Mil\-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM:
- [1804822](/bulletins/10220780.md), 2022-09-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. 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 ofthe following DTCs: P0300 \- Multiple Cylinder Misfire.If DTC P0300 is present either alone or along with other DTCs listed within thisbulletin the right intake camshaft MUST be replaced along with this software update \(only if DTC P0300 is present\). Refer to the detailedservice procedures available in DealerConnect\>Service Library under: Service Info\>09 \- Engine, 3.6L / Cylinder Head / Camshaft, Engine / Removal and Installation\>Right. If just the software flash was done without the right intake camshaft being replacedthe DTC P0300 may reoccur.If DTC P0300 is not present but other DTCs on this list below are present, performjust the software update. P0441 \- EVAP Purge System Performance. P258B \- Electronic Vacuum Pump Performance. C1252\-92 \- Vacuum Pump Control Circuit \- Performance Or Incorrect Operation. 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. P1404 \- EGR Close Position Performance. P1206 \- Fuel Pump Control Module Open Circuit To Fuel Pump. Upon diagnosing the vehicle the technician may find DTC P1206 set before flashing the vehicle, the correct DTC will nowbe P025A \- Fuel Pump Module Control Circuit Open after the software update.In addition the customer may notice one or more of the following: The Anti\-Lock Brake System \(ABS\) light illuminates. The customer may notice an ability to shift into 1st gear at an unsafespeed\(MTX Only\). Cluster displays "Autopark Engaged" even when autopark is no longer active.
- [18\-048\-22](/bulletins/10214602.md), 2022-06-27, Service bulletin: FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. 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 ofthe following DTCs: P0300 \- Multiple Cylinder Misfire. If DTC P0300 is present either alone or along with other DTCs listed within thisbulletin the right intake camshaft MUST be replaced along with this software update \(only if DTC P0300 is present\). Refer to the detailedservice procedures available in DealerConnect\>Service Library under: Service Info\>09 \- Engine, 3.6L / Cylinder Head / Camshaft, Engine / Removal and Installation\>Right.If just the software flash was done without the right intake camshaft being replacedthe DTC P0300 may reoccur. If DTC P0300 is not present but other DTCs on this list below are present, performjust the software update. P0441 \- EVAP Purge System Performance. P258B \- Electronic Vacuum Pump Performance. C1252\-92 \- Vacuum Pump Control Circuit \- Performance Or Incorrect Operation. 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. P1404 \- EGR Close Position Performance. P1206 \- Fuel Pump Control Module Open Circuit To Fuel Pump. Upon diagnosing the vehicle the technician may find DTC P1206 set before flashing the vehicle, the correct DTC will nowbe P025A \- Fuel Pump Module Control Circuit Open after the software update.In addition the customer may notice one or more of the following: Pinging/detonation sound from the engine after warm up at 1000\-1500 RPM at low speed. The Anti\-Lock Brake System \(ABS\) light illuminates. The customer may notice an ability to shift into 1st gear at an unsafespeed\(MTX Only\). Cluster displays "Autopark Engaged" even when autopark is no longer active.
- [S2125000002](/bulletins/10212447.md), 2022-05-31, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer complaint includes a Mil\-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM:
- [S2008000158](/bulletins/10183036.md), 2020-11-30, Service bulletin: EQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE AND ENGINE COOLING. Check Engine Light \(CEL\), No Crank, Cluster Shows Not In Park \(Vehicle Still Able To Obtain Park\) Due To Terminal Push Out \(TPO\) Of The XY230A Inline Connector
- [18\-053\-20 REV. A](/bulletins/10180285.md), 2020-09-28, Service bulletin: ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\). 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.P0300 \- Multiple Cylinder Misfire. P258B \- Electronic Vacuum Pump Performance. C1252\-92 \- Vacuum Pump Control Circuit \- Performance Or Incorrect Operation. 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. P1404 \- EGR Close Position Performance. P1206 \- Fuel Pump Control Module Open Circuit To Fuel Pump. Upon diagnosing the vehicle the technician may find DTC P1206 set before flashing the vehicle, the correct DTC will now be P025A \- Fuel Pump Module Control Circuit Open after the software update.In addition the customer may notice one or more of the following:The Anti\-Lock Brake System \(ABS\) light illuminates. The customer may notice an ability to shift into 1st gear at an unsafe speed\(MTX Only\). Cluster displays "Autopark Engaged" even when autopark is no longer active.
- [9004282](/bulletins/10180170.md), 2020-09-28, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT; EQUIPMENT ADAPTIVE/MOBILITY. PAN AND FILTER, Transmission Oil / GASKET, Oil Pan Prior to replacing the transmission oil pan or replacing the oil pan gasket for a leak in the oil pan area, please contact FCA Redacted Content. The CST will review root causing steps and suggest if the part is required to be returned back to FCA.
- [08\-021\-20 REV. A](/bulletins/10175125.md), 2020-05-18, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Body Control Module \(BCM\) Reconfigure for Enabling the Selectable Tire Fill Alert \(STFA\) Settings This bulletin involves reconfiguring the BCM to enable the STFA settings.This re\-configuration will enable the STFA \(sales code LA5\). Customer does not have Selectable Tire Fill Alert due to a late feature availability.Selectable Tire Fill Alert \(STFA\) Function: \(https://www.youtube.com/watch?v=znqYo86deCg\)

JSON: [/v1/bulletins/10181644](/v1/bulletins/10181644)

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