NHTSA service bulletin

NHTSA Service Bulletin 11026796: 2025 Jeep Grand Wagoneer

Official manufacturer communication context for 2025 Jeep Grand Wagoneer, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 11026796 summary graphic for 2025 Jeep Grand Wagoneer
11026796NHTSA document ID
Manufacturer communicationcommunication type
2affected product rows
90/100quality score

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): **U0673-00 - Lost Communication With Ion Sense Module (in active or stored status). P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking (in active or stored status). P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected (in active or stored status). P0116-00 - Engine Coolant Temperature Sensor 1 Performance (in active or stored status). P0011-00 - Bank 1 Camshaft 1 Position Timing Over Advanced Or (in active or stored status). P25E4-00 - B Camshaft Position - Unable To Achieve Locked Position Bank 1 (in active or stored status). P06DD-00 - Engine Oil Pressure Control Circuit Performance/stuck Off (in active or stored status).** P1CEA - Boost Side EVAP Purge System Performance **(in active or stored status).** P2AF6 - Dual Starter Relay Stuck **(in active or stored status).** P026E - Charge Air Cooler Coolant Pump Performance **(in active or stored status).** Customers may also comment on one or more of the following: **Oil Level High Warning in the Instrument Panel Cluster (IPC). Engine will not start.** Low battery State of Charge (SoC) leading to battery replacement. Vehicle does not restart after an Engine Stop Start (ESS) event but will restart after an ignition cycle. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.

What this bulletin may mean before buying

Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.

Affected products listed in this communication

MakeModelModel yearsBuyer note
JeepGrand Wagoneer2025Ask for service records and run the exact VIN before purchase.
JeepWagoneer2025Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 11026796?

Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): **U0673-00 - Lost Communication With Ion Sense Module (in active or stored status). P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking (in active or stored status). P2C90-00 - Crankcase Ventilation.

Is a service bulletin the same as a recall?

No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.

How should a used-car buyer use this bulletin?

Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.

Check the exact VIN before you buy

Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.

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