# Service bulletin S2118000006

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: 10223244
- Published by NHTSA: 2022\-10\-17
- Manufacturer's number: S2118000006
- Manufacturer's date: 2021\-05\-03
- NHTSA component: EXTERIOR LIGHTING

## NHTSA's summary

Malfunction Indicator Lamp \(MIL\) Illumination. Diagnostic Trouble Code \(DTC\) P20C6 ? Reductant Heater 4 Control Circuit, Set.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10223244-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10223244-9999.pdf)

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

## Components

Lighting

## Trouble codes named

P20C6

## Vehicles listed

- 2021 JEEP GLADIATOR
- 2020 to 2021 JEEP WRANGLER
- 2020 to 2021 RAM 1500

## Recalls for the same vehicles and component

- [24V676000](/recalls/nhtsa/24V676000.md), 2024-09-12: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA; EXTERIOR LIGHTING:BRAKE LIGHTS
- [2021748](/recalls/tc/2021748.md), 2021-12-10: Lights And Instruments
- [2021372](/recalls/tc/2021372.md), 2021-06-11: Lights And Instruments

## Other bulletins for the same vehicles and component

- [0803224](/bulletins/10251879.md), 2024-03-18, Service bulletin: BACK OVER PREVENTION; ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Battery Pack Control Module \(BPCM\) Software Update Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes \(DTC\)s have been set: ? P0AC0 \- Hybrid Battery Pack Current Sensor 1 Circuit Performance. ? P1A29 \- Cell Supervisory Circuit A Failure. ? P0DE7 \- Hybrid/EV Battery Pack Cell Voltage High. ? P0ABA \- Voltage Sense A Circuit. ? P0B3D \- Hybrid Battery Voltage Sense "A" Circuit Low. ? P0B3E \- Hybrid Battery Voltage Sense "A" Circuit High. ? U3017 \- Control Module Timer/Clock Performance. ? P0E55 \- DC/DC Converter Current Sensor Circuit "A". ? P0DAF \- Hybrid/EV Battery Cell Balancing Circuit "A". ? P0AD4 \- Hybrid Battery Pack Air Flow System Insufficient Air Flow. This bulletin involves updating the BPCM with the latest available software.
- [0300224](/bulletins/10251863.md), 2024-03-18, Service bulletin: EXTERIOR LIGHTING; BACK OVER PREVENTION. Front and Rear Axle Sensor Kit \*\*Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code \(DTC\) has been set: ? C1451\-11 \- Service Axle Locker System\*\* Customers may also comment on a Service Axle Locker message displayed in the Electronic Vehicle Information Center \(EVIC\) for this condition.
- [2300424](/bulletins/10251854.md), 2024-03-18, Service bulletin: EXTERIOR LIGHTING:HEADLIGHTS. Headlamp Condensation Clearing Procedure Some customers may report that on occasion, vehicle exterior head lamp assemblies are fogged with a light layer of condensation on the inside of the lenses.
- [0824923](/bulletins/10248940.md), 2024-01-16, Service bulletin: EXTERIOR LIGHTING. Flash: Battery Pack Control Module \(BPCM\) Diagnostic and System Update Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: ? P0607\-00 \- ECU Internal Performance. ? P0C78\-00 \- Hybrid/EV Battery System Precharge Time Too Long. This bulletin involves updating the BPCM with the latest available software.
- [2302923](/bulletins/10248045.md), 2024-01-02, Service bulletin: EXTERIOR LIGHTING:HEADLIGHTS. Headlamp Condensation Clearing Procedure Some customers may report that on occasion, vehicle exterior head lamp assemblies are fogged with a light layer of condensation on the inside of the lenses \(Fig. 1\) . This bulletin is to communicate the procedure for head lamp condensation clearing.
- [0804823](/bulletins/10248015.md), 2024-01-02, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN; BACK OVER PREVENTION; EXTERIOR LIGHTING. Flash: Battery Pack Control Module \(BPCM\) Diagnostic and System Updates Customers may experience a false Malfunction Indicator Lamp \(MIL\) illumination related to PHEV battery: ? P1A21\-00 \- HV Battery Contactor Control Sequence Incorrect. ? P0B3E\-00 \- Hybrid/EV Battery Voltage Sense 1 Circuit High. ? P0607\-00 \- ECU Internal Performance. ? P1E1B\-00 \- Hybrid/EV Battery Side Voltage System Isolation. ? P0AA4\-00 \- Hybrid Battery Negative Contactor Circuit Stuck Closed. ? P1C00\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. ? P1C01\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range High. ? P1A9B\-00 \- Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. ? P0BBD\-00 \- Hybrid Battery Pack Voltage Variation Exceeded Limit. ? P167B\-00 \- Controlled System Shutdown. ? U1885\-00 \- Battery Energy Control Module Lost Communication With HCP. ? P0EDD\-00 \- Hybrid/EV Battery Pack B Deterioration. ? U0111 \- Lost Communication With Hybrid Battery Pack Sensor Module. ? P0CA7\-00 \- Hybrid/EV Battery Discharging Current High. ? P1A0C\-00 \- Battery Energy Control Module System Voltage Low. This bulletin involves updating the BPCM with the latest available software. NOTE: Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this BPCM update: ? Powertrain Control Module \(PCM\). ? Integrated Dual Charging Module \(IDCM\). ? Transmission Control Module \(TCM\). ? Battery Pack Control Module \(BPCM\). ? Hybrid Control Processor \(HCP\), Auxiliary Hybrid Control Processor \(AHCP\) also known as the Power Inverter Module \(PIM\).
- [0804723](/bulletins/10248013.md), 2024-01-02, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Flash: Integrated Dual Charging Module \(IDCM\) Enhancements Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find the following DTCs have been set: ? \*\*B22A9\-16 \- ECU Internal Performance\-Circuit Voltage Below Threshold. ? B22A9\-17 \- ECU Internal Performance\-Circuit Voltage Above Threshold. ? B22A9\-19 \- ECU Internal Performance\-Overcurrent.\*\* ? B22A9\-64 \- ECU Internal Performance\-Signal Plausibility Failure. ? P0D27\-00 \- Battery Charger 1 Input Voltage Too Low. Customer may also experience the following: ? \*\*Unable to charge the vehicle with level 2 charger.\*\* ? Vehicle would not charge and the charge station circuit breaker in the house / receptacle trips when its plugged into the vehicle. This bulletin involves reprogramming the IDCM with the latest software available. NOTE: Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this IDCM update: ? Powertrain Control Module \(PCM\). ? Integrated Dual Charging Module \(IDCM\). ? Transmission Control Module \(TCM\). ? Battery Pack Control Module \(BPCM\). ? Hybrid Control Processor \(HCP\), Auxiliary Hybrid Control Processor \(AHCP\) also known as the Power Inverter Module \(PIM\).
- [1801623](/bulletins/10247996.md), 2024-01-02, Service bulletin: BACK OVER PREVENTION; ELECTRICAL SYSTEM; EXTERIOR LIGHTING; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\). 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:P0335 \- Crankshaft Position Sensor Circuit. P0339 \- Crankshaft Position Sensor Intermittent. Other software enhancement included with this update: Idle stability improvements during Electronic Stability Control \(ESC\) events.
- [S2025000001](/bulletins/10247967.md), 2024-01-02, Service bulletin: EXTERIOR LIGHTING; BACK OVER PREVENTION. Malfunction Indicator Lamp Illumination \(MIL\). Diagnostic Trouble Code \(DTC\) P203E ? Reductant Level Sensor 1 Circuit Intermittent\-Erratic Set.
- [93446](/bulletins/10244428.md), 2023-10-30, Service bulletin: EXTERIOR LIGHTING; EQUIPMENT. FCA Caribbean Warranty Bulletin ID\-23\-21 \(XL1\) Backlite Select 2019 \- 2021 RAM 1500 Pickup \(DT\)

JSON: [/v1/bulletins/10223244](/v1/bulletins/10223244)

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