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July 7, 2023 Service bulletin

HVAC temperature door stuck (HVAC) Customers may experience a Malfunction Indicator Lamp (MIL) illumination

Jeep technical service bulletin 2400723 for 2022-2023 Jeep Wagoneer and 2022-2023 Jeep Grand Wagoneer.

Bulletin number
2400723
Component
Visibility: defroster/defogger/HVAC system
Summary
HVAC temperature door stuck (HVAC) Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTC)s have been set: ?B11CB-92 Front/Left Temperature Door 1 Control - Performance or Incorrect Operation. ? B11CC-00 Main/Left Temperature Door 1 Travel Too Small. Customers may also comment on the following: ? Driver side temperature cold when commanded to hot (or vice versa). This bulletin involves installing a three millimeter foam washer under the blend door cam gear.

Owners of these vehicles have filed 15 complaints in the visibility category.

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