MechanicDB
Fault Family System: Powertrain (P-Codes) 5 SAE Codes

Engine Coolant Pressure Sensor Circuit

Diagnostic & Technical Explanation
Code P05C2 (Engine Coolant Pressure Sensor Circuit) sets when the ECM sees an open, shorted, or implausible signal from the pressurized cooling system's coolant pressure sensor, used to detect low coolant/leaks in a sealed-loop cooling system. Causes are a failed sensor, a corroded connector, or an actual loss of system pressure from a coolant leak that also needs addressing.

These 5 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 5 times.

Codes in this family (5)

CodeDefinitionRepair coverage
P05C2Engine Coolant Pressure Sensor Circuit3 ranked fixes
P05C3Engine Coolant Pressure Sensor Circuit Range/Performance3 ranked fixes
P05C4Engine Coolant Pressure Sensor Circuit Low3 ranked fixes
P05C5Engine Coolant Pressure Sensor Circuit High3 ranked fixes
P05C6Engine Coolant Pressure Sensor Circuit Intermittent/Erratic3 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here: