Vehicle has the following codes P0128 Engine coolant temperature below thermostat regulating temperature. P0430 Catalyst system low efficiency bank 2. P06DD Engine oil pressure control solenoid valve stuck off. For code P0128 cleared codes and monitored coolant temperature with scan tool, coolant sensor is working. Found thermostat opening too soon. P06DD Going to need further diagnosis. P0430 Needs further diagnosis. need at least 2 more hours of diag time to confirm the other codes. Code returned After rest and test drive.