# Service bulletin 18\-038\-26 REV. A

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: 11035974
- Published by NHTSA: 2026\-08\-06
- Manufacturer's number: 18\-038\-26 REV. A
- Manufacturer's date: 2026\-07\-29
- NHTSA component: ELECTRICAL SYSTEM; POWER TRAIN

## NHTSA's summary

Flash: Powertrain Control Module \(PCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle exhibit/set SYMPTOM: one or more of the following Diagnostic Trouble Codes \(DTCs\): ● P219A \- Bank 1 Air\-Fuel Ratio Imbalance. ● P219B \- Bank 2 Air\-fuel Ratio Imbalance. ● P032F \- Combustion Engine Producing Insufficient Torque. NOTE: This revision has an updated and more effective fix for DTC P219B than the prior version. Customers may experience one or more of the following: ● \*\*Power Take Off \(PTO\) may cancel during engagement with high PTO loads.\*\* ● Engine speed surging, unstable, hunting, or oscillating while coasting at low vehicle speeds. ● Stationary Idle PTO feature is not activating when the user configuration is selected to require parking brake be set \(DD/DP Only\). ● PTO not auto\-resuming after hard\-wired remote start \(DD/DP Only\). ● Driveline clunk or bump when coasting to a stop in cruise control mode. ● Engine idle undershoot or delayed response with power steering input. In addition, the following software enhancement\(s\) is available: ● Increase the duration that PTO related messages are displayed on the Instrument Panel Cluster \(IPC\) \(DD/DP Only\). This bulletin involves reprogramming the PCM with the latest available software.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11035974-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11035974-9999.pdf)

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

## Components

Electrical system, Transmission and driveline

## Trouble codes named

P032F, P219A, P219B

## Vehicles listed

- 2025 RAM 2500
- 2025 RAM 3500
- 2025 RAM 4500
- 2025 RAM 5500

## Recalls for the same vehicles and component

- [2026225](/recalls/tc/2026225.md), 2026-05-07: Powertrain
- [26V288000](/recalls/nhtsa/26V288000.md), 2026-05-07: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)
- [26V225000](/recalls/nhtsa/26V225000.md), 2026-04-09: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [2026043](/recalls/tc/2026043.md), 2026-02-02: Electrical
- [26V059000](/recalls/nhtsa/26V059000.md), 2026-02-02: ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL; EXTERIOR LIGHTING:TURN SIGNAL; EXTERIOR LIGHTING:BRAKE LIGHTS
- [25V826000](/recalls/nhtsa/25V826000.md), 2025-12-01: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [25V297000](/recalls/nhtsa/25V297000.md), 2025-05-08: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\)

## Other bulletins for the same vehicles and component

- [9100928](/bulletins/11038551.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM; WHEELS. TPMS full assembly\(core \& Stem To support proper failure analysis and validation, dealers must return the complete TPMS sensor assembly when submitting a claim related to a TPMS leak concern. Claims submitted with TPMS sensors that are missing the valve core and/or stem components will be considered incomplete and will not be eligible for evaluation. As a reminder, the complete Tire Pressure Monitor, including the valve stem should be returned., the claim will be rejected and subject to warranty chargeback, as Stellantis cannot perform a comprehensive root cause analysis without all original components of the assembly.
- [9100928](/bulletins/11038514.md), 2026-10-16, Service bulletin: WHEELS; ELECTRICAL SYSTEM. TPMS full assembly\(core \& Stem To support proper failure analysis and validation, dealers must return the complete TPMS sensor assembly when submitting a claim related to a TPMS leak concern. Claims submitted with TPMS sensors that are missing the valve core and/or stem components will be considered incomplete and will not be eligible for evaluation. As a reminder, the complete Tire Pressure Monitor, including the valve stem should be returned., the claim will be rejected and subject to warranty chargeback, as Stellantis cannot perform a comprehensive root cause analysis without all original components of the assembly.
- [9100926](/bulletins/11038319.md), 2026-10-07, Service bulletin: ELECTRICAL SYSTEM. WIRELESS CHARGER Welcome GREEN LED not turning ON after multiple IGN ON/OFF without sleep cycle and no phone on the charging pads. Part numbers affected: 68630089AA 68630088AB 68649038AA Welcome Green LED turns on for 1 second after multiple IGN ON/OFF without sleep cycle and no phone on the charging pad. Intent of this condition is to notify the customer/dealership that the Wireless Charging Pad is ready to charge. Do not report as warranty claim, no impact to wireless charger functionality. Part numbers affected: 68630089AB 68630088AD 68649038AB Advice to dealership: Do no replace wireless charger PNs 68630089AA,68630088AB,68649038AA if no Welcome GREEN LED is seen after multiple IGN ON/OFF without sleep cycle and no phone on the charging pads. This feature is available in the successor NIKs, no impact to wireless charger functionality.
- [114739](/bulletins/11037595.md), 2026-09-30, Service bulletin: POWER TRAIN. TRANSMISSION KIT \- WITH TORQUE CONVERTER
- [08\-339\-26](/bulletins/11037585.md), 2026-09-30, Service bulletin: ELECTRICAL SYSTEM. Max Tow Right and Left Rear Wheel Speed Sensors Inoperable Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● C003A\-62 \- Right Rear Wheel Speed Sensor \- Signal Compare Failure. ● C0037\-62 \- Left Rear Wheel Speed Sensor \- Signal Compare Failure. ● C003A\-2F \- Right Rear Wheel Speed Sensor \- Signal Erratic. ● C0037\-2F \- Left Rear Wheel Speed Sensor \- Signal Erratic. Customers may comment on one or more of the following: ● The check engine light is illuminated. ● The Anti\-Lock Brake System \(ABS\) light is illuminated. ● The Traction Control System \(TCS\) light is illuminated. ● The Forward Collision Warning \(FCW\) light is illuminated. ● The "4WD Unavailable" message is displayed in the Instrument Panel Cluster \(IPC\). ● Vehicle might not shift from Drive to Park or vice versa. NOTE: The vehicle safe hold systems are in place if the vehicle does not shift to Park. ● Vehicle will not shut off. This bulletin involves replacing both rear wheel speed sensors.
- [25\-004\-26 REV. A](/bulletins/11037580.md), 2026-09-30, Service bulletin: ENGINE; ELECTRICAL SYSTEM. Exhaust Gas Temperature \(EGT\) Sensor Water Intrusion ’s VIN MUST be listed in VIP or your RSU VIN list. NOTE: This bulletin applies to ● The Vehicle MUST be built on or before February 16, 2026 \(MDH North America, Enlarged 0216XX\). Europe, Middle East \& ● The vehicle MUST be equipped with a 6.7L I6 Cummins Turbo Africa, and India \& Asia Diesel Engine \(Sales Codes ETM or ETN\). Pacific markets. CUSTOMER Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code \(DTC\): ● P2482\-00 \- Exhaust Gas Temperature Sensor Circuit High \- Bank 1 Sensor 5. Customers may also comment on the following: ● Soot load is too high and power derate occurs due to regen being disabled. This bulletin involves replacing the EGT sensors.
- [9100922](/bulletins/11037476.md), 2026-09-23, Service bulletin: ENGINE; ELECTRICAL SYSTEM. SENSOR Exhaust Temperature If this sensor is being replaced due to an early\-life P242B pending fault code, clear the fault code and perform the Powertrain Verification Test. Only replace the sensor if P242B returns as an active fault code.
- [9100901](/bulletins/11037344.md), 2026-09-17, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [25\-004\-26](/bulletins/11037339.md), 2026-09-17, Service bulletin: ELECTRICAL SYSTEM; ENGINE. Exhaust Gas Temperature \(EGT\) Sensor Water Intrusion CUSTOMER Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code \(DTC\): ● P2482\-00 \- Exhaust Gas Temperature Sensor Circuit High \- Bank 1 Sensor 5. Customers may also comment on the following: ● Soot load is too high and power derate occurs due to regen being disabled. This bulletin involves replacing the EGT sensors.
- [08\-331\-26](/bulletins/11037333.md), 2026-09-17, Service bulletin: ELECTRICAL SYSTEM. Flash: Vehicle System Interface Module \(VSIM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code \(DTC\): ● B2204\-87 \- Ecu Configuration Mismatch\-Missing Message. Customers may comment on the following: ● Odometer is blinking while ignition is on. This bulletin involves inspecting and possibly reprogramming the VSIM with the latest available software.

JSON: [/v1/bulletins/11035974](/v1/bulletins/11035974)

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