JEEP
18-108-25
Manufacturer communications
- Publication date
- 2025-12-13
- Received by NHTSA
- 2025-12-17
- NHTSA record numbers
- 11026686
Manufacturer summary
Original wording in English
Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician must find one or more of the following Diagnostic Trouble Codes (DTC)s have been set:
• P2450 - Fuel Tank Isolation Valve Stuck Open.
• P1D83 - Implausible Engine Oil Temperature Signal Received. Customers may comment on one or more of the following:
• Fuel Door will not open due to intermittent Fuel Tank Isolation Valve (FTIV) Stuck Open.
• Reduced fuel efficiency. In addition, the following software enhancement is available:
• Hood Switch changes. This bulletin involves reprogramming the PCM, HCP and AHCP, also known as the Power Inverter Module (PIM) with the latest available software.
• P2450 - Fuel Tank Isolation Valve Stuck Open.
• P1D83 - Implausible Engine Oil Temperature Signal Received. Customers may comment on one or more of the following:
• Fuel Door will not open due to intermittent Fuel Tank Isolation Valve (FTIV) Stuck Open.
• Reduced fuel efficiency. In addition, the following software enhancement is available:
• Hood Switch changes. This bulletin involves reprogramming the PCM, HCP and AHCP, also known as the Power Inverter Module (PIM) with the latest available software.
Reported code forms
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
Jeep
P1D83Implausible Engine Oil Temperature Signal ReceivedJeep
P2450Fuel Tank Isolation Valve Stuck OpenCheck vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Jeep | WRANGLER 4XE | 2022 |