Fault Code 14
Description: MAP (Manifold Absolute
Pressure) sensor electronic failure
Power loss light: On
Limp-in mode: TPS and engine speed used as an indication
of manifold pressure
Bad connector or wiring - check the MAP sensor connector contacts
for corrosion. Check the wiring for continuity.
MAP sensor failure - Replace the MAP sensor which is located
on the right shock tower on '87 and later vehicles or in the logic module
on previous vehicles. Damage from freezing water can destroy a MAP
- MAP sensor output voltage is below 0.02V or above 4.94V
Results If Component Fails
A fault code 14 is stored, the power loss light is turned on, and the system
will enter limp-in mode. The AIS will then be completely closed and
the logic module will use the TPS and the ignition reference sensor to
guess what the manifold pressure is. Also, the engine speed will
be limited to 2,000 rpm on turbo engines when the throttle plate is opened
more than 22 degrees to prevent overboost.
This page is maintained by Russell W. Knize and was last updated 08/28/98.
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Copyright © 1996-2003 Russ W. Knize