With the MIL on, the technician may find DTC P0108 (manifold absolute pressure sensor circuit high) has been set active or stored. (autoserviceprofessional.com)
- MIL on (with DTC P0108 — manifold absolute pressure sensor circuit high may have been set active or stored with the 3.6 L engine... this involves 2012 vehicles only). (autoserviceprofessional.com)
This has the advantage of requiring no additional hardware and no ongoing maintenance, at the expense of being unable to measure absolute pressures and the possibility in some implementations of the system providing a false «ok» indication if all tires are losing pressure at the same rate. (mechanics.stackexchange.com)