NHTSA service bulletin

NHTSA Service Bulletin 11031451: 2023 Jeep Wrangler

Official manufacturer communication context for 2023 Jeep Wrangler, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 11031451 summary graphic for 2023 Jeep Wrangler
11031451NHTSA document ID
Manufacturer communicationcommunication type
1affected product rows
92/100quality 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 SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): **P0300 - Multiple Cylinder Misfire (Active or Stored status set during cold start catalyst heating). P0301 - Cylinder 1 Misfire (Active or Stored status set during cold start catalyst heating). P0302 - Cylinder 2 Misfire (Active or Stored status set during cold start catalyst heating). P0303 - Cylinder 3 Misfire (Active or Stored status set during cold start catalyst heating). P0304 - Cylinder 4 Misfire (Active or Stored status set during cold start catalyst heating). P0305-00 - Cylinder 5 Misfire (Active or Stored status set during cold start catalyst heating). P0306-00 - Cylinder 6 Misfire (Active or Stored status set during cold start catalyst heating).** P08A6 - Gear Lever Position Sensor System - Multiple Sensor Correlation. P152F - Engine Hood Switch 2 / Engine Hood Switch 1 Correlation. P1129 - Closed Loop Fueling Not Achieved - Bank 2 Upstream. P0152-02 - O2 Sensor 2/1 Circuit High. P0158-02 - O2 Sensor 2/2 Circuit High. P2504 - Charging System Output High. P0563 - Battery/System Voltage High. Customers may also comment on one or more of the following: **The vehicle has a rough idle. The engine has a miss. Noisy valvetrain. "Service Transmission" message in the Instrument Panel Cluster (IPC) due to clutch slip detection with the transfer case in neutral. NOTE: Some customers may experience wheel spin or traction loss. In these situations, the Powertrain Control Module (PCM) may interpret the event as excessive clutch slip. To prevent potential clutch damage, a message may be displayed in the Instrument Panel Cluster (IPC).** Clutch is overheating. Clutch is slipping on engagement. Inability to accelerate uphill. M18 FSAR-TSB-7162 -2- Vehicle does not start. Vehicle is stuck in limp-home mode

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
JeepWrangler2023Ask 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 11031451?

Flash: Powertrain Control Module (PCM) Updates 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): **P0300 - Multiple Cylinder Misfire (Active or Stored status set during cold start catalyst heating). P0301 - Cylinder 1 Misfire (Active or Stored status set during cold start catalyst.

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.

Get Full Report