Diagnostic Aids

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

Any leak in the charge air cooler (CAC) coolant system or improper operation of the coolant pump can set this DTC.
The intercooler system includes a cover, two heat exchangers, water manifold, a CAC radiator and an electric coolant pump. The coolant pump transfers coolant from the radiator, located in front of the condenser and engine cooling system radiator, to the water manifold. Coolant enters the inlet port of the water manifold assembly, is directed into and through the CAC heat exchangers, and exits back into the water manifold. Coolant then exits the water manifold outlet port returning to the separate cooling system radiator.