10 documented codes across 21 real diagnostics.
Coolant temperature sensing, thermostat regulation and cooling fans. Often a driveability complaint rather than an overheating one.
Ranked by how often we actually see them
- P0693, Cooling fan 2 control circuit low
- P0118, Engine coolant temperature circuit high
- P0115, Engine coolant temperature circuit
- P0483, Cooling fan rationality check
- P0128, Coolant thermostat, coolant below regulating temperature
- P0691, Cooling fan 1 control circuit low
- P0117, Engine coolant temperature circuit low
- P0480, Cooling fan 1 control circuit
- P0116, Engine coolant temperature circuit range/performance
- P0694, Cooling fan 2 control circuit high