Each engine on a jet has an intake. Each jet is equipped with at least two or more jet engines. Thus, if one intake were to fail, the jet would lose thrust but still be able to land safely.
p1159- Variable Intake Motor Malfunction
IAT (intake air temperature) sensor ciruit malfunction.
secondary air intake malfunction
Intake air temperature sensor circuit malfunction.
intake manifold runner control malfunction (stuck open)
If it is P1538 it is for intake manifold runner control malfunction bank two stuck open.
Trouble code P0662 means: Intake manifold tuning valve control circuit high (bank 1)
Code 23 refers to a malfunction in the intake temperature sensor circuit.
leads to goitre
you will have high cholestrol
If you mean PO660 it is Intake Manifold Tuning Valve circuit Malfunction. Click the link.
your engine will run too lean.