Jeep bulletin 9100840
What it saysSwitchbank 4 gang The customer will notice either one or two of the following conditions: 1. NHTSA’s full summary ↓
Jeep filed this with NHTSA as a service bulletin dated Jul 15, 2026, received Jul 23, 2026, about the fuel/propulsion system. It names 3 model years (2024–2026). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationSwitchbank 4 gang The customer will notice either one or two of the following conditions: 1. Fuel Door is Not opening when Fuel door Switch is pushed. Technician Observe the DTC P04CB-FUEL FILL DOOR OPEN REQUEST SENSOR-SWITCH CIRCUIT HIGH. 2. Drives Modes do not work when Switch is pressed (Hybrid, Electric, E-save). Technician Observe DTC U113B-LOST COMMUNICATION WITH SWITCH BANK MODULE. Procedure: If during vehicle Scan diagnostics besides DTC's P04CA, P04CB or U113B. there are another DTCs Repair it First accordingly. DTC's may be related to main ECU's like: HCP, BCM, PCM, etc. If DTC P04CB and/or U113B are still present, then follow the following action before replacing the Switch: 1. Read vehicle DTCs while the IGN ON. 2. Verify ESBM feed fuse state. Replace the fuse if needed. 3. Wiggle the ESBM harness takeout (LIN and ESBM feed takeout) and monitor the state of DTC P04CB and/or U113B. o If this step affects DTC P04CB and/or U113B. behavior, the issue is likely related to a failure in the harness. 4. Disconnect the harness from the ESBM and confirm there not any damage, like bend PINs, corrosion, etc. 5. Confirm Harness continuity. 6. Verify power to ESBM by back probing the ESBM connector o If voltage is lower than 11.8V, follow normal procedures for low batteries. - If there no damage in the harness nor the connector and pins of the ESBM, reconnect it ensuring the harness connector is being fully engaged into the ESBM connector. 7. Confirm Continuity of the harness from the ESBM connector to the BCM connectors. 8. Reconnect the ESBM and then Verify LIN bus activity with Mopar scope. o Config scope to LIN monitor if feasible. o Replace the ESBM only based confirmation from the LIN diagnostic. 9. With the scan tool, read DTCs. If still DTC are set, replace ESBM (Fuel door and drive modes Switch module) in accordance with the Service Information. Flag the part to be returned to supplier for further part analysis.
Trouble codes it names: P04CA P04CB U113B
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 9100840 | Service bulletin | Jul 15, 2026 | 11035192 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 3 model years this bulletin names have filed 1,031 complaints with NHTSA since 2015. 227 of them name Fuel/Propulsion System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
Vehicle has a bad stumble/misfire under light load around 19 mph and 40 mph the vehicle lunges forward. After being at the dealership for over a month, They say it is normal operation that all their vehicles 3.6L. Being a mechanic for 30 years this is not normal operating conditions.
2026 Jeep Wrangler · Fuel/Propulsion System · filed with NHTSA Aug 28, 2026
My vehicle did a software update Friday, October 10 10th after the update the vehicle went into a limp mode. I had to put the vehicle in park. Turn the vehicle off. Turn the vehicle back on immediately a check engine light came on.
2025 Jeep Wrangler · Fuel/Propulsion System · filed with NHTSA Oct 11, 2025
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the fuel/propulsion system
Source: same model, same component group13 other manufacturer communications filed against the Jeep Wrangler under the same component group (fuel/propulsion system), newest first. The eight newest are listed; the rest are on the Jeep list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 9100833 REV1 | Service bulletin | Jul 6, 2026 | Fuel Delivery Module Before replacing the fuel module for DTCs P0461 and P062A and other not start, long crank, fuel gauge accuracy and driv… |
| 9100833 | Service bulletin | Jun 17, 2026 | Fuel Delivery Module Before replacing the fuel module for DTCs P0461 and P062A and other not start, long crank, fuel gauge accuracy and driv… |
| 23-040-25 | Service bulletin | Nov 1, 2025 | Fuel Filler Door Will Not Open Customers may experience the following: ● Fuel filler door does not open This bulletin involves inspecting an… |
| 14-010-25 REV. A | Service bulletin | Jun 24, 2025 | Frequent Repairs Of Fuel System Components Such As Fuel Filters Numerous Stellantis vehicles having fuel line components replaced such as di… |
| 14-012-25 | Service bulletin | May 31, 2025 | "Unable To Refuel Vehicle Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the fol… |
| 105038 | Service bulletin | May 15, 2025 | TUBE - FUEL INJECTOR SUPPLY & GASKET - NONE |
| 105039 | Service bulletin | May 14, 2025 | TUBE - FUEL INJECTOR SUPPLY & GASKET - NONE |
| 103777 | Service bulletin | Mar 5, 2025 | TAPPET KIT - FUEL DOOR |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Jeep, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Jeep 9100840 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 9100840 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does 9100840 cover?
The manufacturer filed it against 3 model years: 2026 Jeep Wrangler, 2025 Jeep Wrangler, 2024 Jeep Wrangler. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.