Jeep Wrangler 2022 — technical service bulletin
Bulletin 0700623 · NHTSA communication 10239945 · issued May 13, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2022
model years
1
vehicle entries
Official summary
Mis-Installed 3-way Coolant Valve The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC): ? P0E80-00 - Coolant Bypass Valve 9B9 Control Stuck Closed. Customer may also experience the following: ? Intermittent no heat. This bulletin involves possibly rerouting the three way valve hoses.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.