# Service bulletin 18\-109\-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: 10187705
- Published by NHTSA: 2021\-03\-01
- Manufacturer's number: 18\-109\-20
- Manufacturer's date: 2020\-12\-11
- NHTSA component: ELECTRICAL SYSTEM; ENGINE; 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, a technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set:P0087\-00 \- Fuel Rail Pressure Too Low \(with rapid apply and release of accelerator pedal\). P015E\-00 \- Excessive Time To Enter Closed Loop Fuel Timing Control. P01CB\-00 \- Cylinder 1 Injection Timing Performance \- Over Retarded. P01CC\-00 \- Cylinder 1 Injection Timing Performance \- Over Advanced. P01CD\-00 \- Cylinder 2 Injection Timing Performance \- Over Retarded. P01CE\-00 \- Cylinder 2 Injection Timing Performance \- Over Advanced. P01CF\-00 \- Cylinder 3 Injection Timing Performance \- Over Retarded. P01D0\-00 \- Cylinder 3 Injection Timing Performance \- Over Advanced. P01DL\-00 \- Cylinder 4 Injection Timing Performance \- Over Retarded. P01D2\-00 \- Cylinder 4 Injection Timing Performance \- Over Advanced. P01D3\-00 \- Cylinder 5 Injection Timing Performance \- Over Retarded. P01D4\-00 \- Cylinder 5 Injection Timing Performance \- Over Advanced. P01D5\-00 \- Cylinder 6 Injection Timing Performance \- Over Retarded. P01D6\-00 \- Cylinder 6 Injection Timing Performance \- Over Advanced. P0534\-00 \- A/C Refrigerant System "A" Charge Loss. P204F\-00 \- Reductant System Performance. P2199\-00 \- Intake Air Temperature Sensor 1 / 2 Correlation. P225D\-00 \- Nox Sensor 1/1 Performance \- Signal Stuck Low. P2610\-00 \- PCM Internal Engine Off Timer Performance. U0100\-00 \- Lost Communication With ECM/PCM ?A?. P0300\-00 \- Multiple Cylinder Misfire. P0301\-00 \- Cylinder 1 Misfire. P0302\-00 \- Cylinder 2 Misfire. P0303\-00 \- Cylinder 3 Misfire. P0304\-00 \- Cylinder 4 Misfire. P0305\-00 \- Cylinder 5 Misfire. P0306\-00 \- Cylinder 6 Misfire. P020A\-00 \- Cylinder 1 Injection Timing. P020B\-00 \- Cylinder 2 Injection Timing. P020C\-00 \- Cylinder 3 Injection Timing. P020D\-00 \- Cylinder 4 Injection Timing

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10187705-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10187705-9999.pdf)

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

## Components

Electrical system, Engine, Transmission and driveline, Automatic transmission, Transmission control module

## Trouble codes named

P0087, P015E, P01CB, P01CC, P01CD, P01CE, P01CF, P01D0, P01D2, P01D3, P01D4, P01D5, P01D6, P020A, P020B, P020C, P020D, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0534, P204F, P2199, P225D, P2610, U0100

## Vehicles listed

- 2020 JEEP WRANGLER

## Other bulletins for the same vehicles and component

- [S2321000005](/bulletins/10248561.md), 2024-01-08, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. Transmission Fluid Leak From Under The Vehicle.
- [S2321000005](/bulletins/10244400.md), 2023-10-30, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT. Transmission Fluid Leak From Under The Vehicle.
- [1807023](/bulletins/10241090.md), 2023-08-21, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates 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: ? \*\*P02EE \- CYLINDER 1 INJECTOR CIRCUIT PERFORMANCE. ? P02EF \- CYLINDER 2 INJECTOR CIRCUIT PERFORMANCE. ? P02F0 \- CYLINDER 3 INJECTOR CIRCUIT PERFORMANCE. ? P02F1 \- CYLINDER 4 INJECTOR CIRCUIT PERFORMANCE. \*\* ? P0335 \- Crankshaft Position Sensor Circuit. ? P0339 \- Crankshaft Position Sensor Intermittent. ? P2C90 \- Crankcase Ventilation System \- Hose 9A9 Disconnected . ? P2172 \- High Airflow/Vacuum Leak Detected \(Instantaneous Accumulation\). ? P0441 \- EVAP Purge System Performance. ? P0607 \- ECU Internal Performance. ? P0506 \- Idle Speed Performance Lower Than Expected. The customer may also comment on the following: ? ?Performance Limited Service Fuel System? message in the Instrument Panel Cluster \(IPC\). This bulletin involves reprogramming the PCM with the latest available software.
- [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.
- [S1808000152](/bulletins/10234438.md), 2023-04-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). CEL \(Check Engine Lamp\) Illuminates, Recent PCM Replace or Flash Update Performed, Diagnostic Trouble Codes \(DTCs\) P057B Brake Pedal Position Sensor Circuit Performance, P1572 Brake Pedal Stuck, C0042\-54 Brake Pedal Missing Calibration
- [S2207000002](/bulletins/10229470.md), 2023-01-09, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:COOLER/RADIATOR:HOSES AND FITTINGS; UNKNOWN OR OTHER. Coolant leak
- [1805322](/bulletins/10229149.md), 2023-01-09, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; EXTERIOR LIGHTING. 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: P2172 \- High Airflow/Vacuum Leak Detected \(Instantaneous Accumulation\). P0441 \- EVAP Purge System Performance. P0607 \- ECU Internal Performance. P0506 \- Idle Speed Performance Lower Than Expected
- [1801220A](/bulletins/10223597.md), 2022-10-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). 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 of the followingDTCs have been set:P2C90 \- Crankcase Ventilation System \- Hose "A" Disconnected. P0607 \- ECU Internal Performance. P0506 \- Idle Speed Performance Lower Than Expected.
- [1801220](/bulletins/10223586.md), 2022-10-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). 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 of the followingDTCs have been set: P0607 \- ECU Internal Performance. P0506 \- Idle Speed Performance Lower Than Expected.
- [1801320](/bulletins/10223585.md), 2022-10-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). 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 have been set: P0607 \- ECU Internal Performance. P0506 \- Idle Speed Performance Lower Than Expected

JSON: [/v1/bulletins/10187705](/v1/bulletins/10187705)

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