Some owners of 2008 Dodge Caliber SRT 4 (2.4L turbo engine built prior to March 4, 2008) vehicles may experience intermittent MIL illumination. A limp-in condition and/or lack of turbo boost after the MIL may be experienced.
You may find DTC P0234 (turbocharger overboost condition) and/or P0128 (thermostat rationality) are set.
Using a scan tool with the appropriate diagnostic procedures available in TechCONNECT (software must be 8.04 or higher), verify that all systems are functioning as designed and that no turbocharger modifications have occurred. If DTCs other than those listed here are present, diagnose and repair as needed before proceeding.
SPECIAL TOOLS REQUIRED
CH9401 StarSCAN tool
CH9404D StarSCAN vehicle cable
CH9409 StarSCAN documentation kit
CH9410 StarSCAN Ethernet cable, 12 ft.
CH9412 StarSCAN software update device kit
TechCONNECT PC or equivalent