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Jeep TSB #1810523
2023 Jeep Grand Wagoneer
TSB Document:
Affected Component: EXTERIOR LIGHTING
- Summary
- Flash: Powertrain Control Module (PCM) Updates 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 (DTCs) have been set: ? P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected. ? P0011-00 - Bank 1 Camshaft 1 Position Timing Over Advanced Or System Performance. ? P0604-00 - Internal Control Module Random Access Memory Ram Error. ? P060C-00 - Internal Control Module Main Processor Performance. This bulletin involves reprogramming the PCM with the latest available software.
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