This Detroit intake pressure high reference documents fault code SPN 102/FMI 16 (Intake Manifold Pressure Too High) for Detroit DD13, DD15 and DD16 engines. It reproduces the original TruckFaultCodes.com fault tree, from the first check through the final repair, so the code can be confirmed and worked in the exact order the factory intended. Each step lists the measured value or check and the pass or fail branch that follows, matching the layout used in the source document.
Detroit intake pressure high troubleshooting overview
This five-page GHG14 tree diagnoses over-boost. It compares inlet-manifold to barometric pressure, then splits by turbo type: AT engines go through the wastegate solenoid, actuator and air-line checks, while both paths inspect the EGR delta-P sensor, valve, cooler and actuator pull rod. It closes with a test MCM2.1 and a loaded highway verification cycle above 1130 rpm. Follow the checks in sequence and verify the repair before clearing the code and releasing the vehicle.
Official document details
| Brand | Detroit |
| Model coverage | Detroit DD13, DD15 and DD16 engines |
| System / group | DTCs — intake manifold pressure, wastegate and EGR |
| Fault code | SPN 102/FMI 16 |
| Source publication | TruckFaultCodes.com (© 2017) |
| Pages | 5 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification — SPN 102/FMI 16
- Enabling-condition table (1130–1810 rpm, torque, throttle, temperatures)
- Inlet-manifold versus barometric pressure comparison
- Wastegate solenoid, actuator and air-line checks (AT engines)
- EGR delta-P, valve, cooler and pull-rod inspection
- Test MCM2.1 and loaded verification cycle
Applicable truck models
It applies to Detroit DD13, DD15 and DD16 engines on the GHG14 platform, including asymmetrical-turbocharger (AT) configurations. Always cross-check the reading against any companion codes before condemning a component. For the official product and service literature, visit the Detroit Diesel website.
Who needs this Detroit intake pressure high manual
Technicians diagnosing an over-boost code who need the wastegate and EGR branch that matches their turbo type. It is written for shop use as a quick, printable reference to keep beside a diesel diagnostic tool during the job.
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