Technical Service Bulletin 18-109-25 — 2021 JEEP WRANGLER 4XE
ENGINE
Bulletin Details
| TSB ID | 18-109-25 |
| Manufacturer | |
| Vehicle | 2021 JEEP WRANGLER 4XE |
| Component | ENGINE |
| Communication Date |
Bulletin Summary
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
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2021 JEEP WRANGLER 4XE
08-036-26
ELECTRICAL SYSTEM
18-109-25
ELECTRICAL SYSTEM
S1819000004 REV.R
WHEELS
S1819000004 REV.R
SUSPENSION
S2208000138 REV.B
ELECTRICAL SYSTEM
08-082-25 REV. A
ELECTRICAL SYSTEM
21-007-25
POWER TRAIN
08-098-24 REV. A
ELECTRICAL SYSTEM
21-024-24 REV. A
POWER TRAIN
75610
STRUCTURE