Intake Manifold Pressure Circuit
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Overview
CODE | REASON | EFFECT |
Fault Code: 433 PID: P102 SPN: 102 FMI: 2/2 LAMP: Yellow SRT: |
Voltage signal at the intake manifold pressure circuit indicates high intake manifold pressure, but other engine characteristics indicate that intake manifold pressure |
Derate to no-air setting. |
![]() Intake Manifold Pressure Circuit
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Circuit Description
The intake manifold pressure/temperature sensor monitors intake manifold pressure and passes information to the electronic control module (ECM) through the sensor harness. If intake manifold pressure exceeds 127 mm Hg [5 in Hg] for more than 20 seconds while the engine is under 5-percent load, it will cause a derate condition.
Component Location
The intake manifold pressure/temperature sensor is located on the cylinder head, between the air horn and the front of the engine.
Shop Talk
The ECM checks for this fault
only at engine speeds up to 50 rpm above the set idle speed. If the intake manifold pressure shows too high of a value at this time, the ECM will log this fault code.
Refer to Troubleshooting Fault Code t05-433.