Series 50G/60G Troubleshooting – Section 5.22 PID 106, FMI 3, Flash Code 67, Manifold Absolute Pressure Sensor Input Voltage High

Section 5.22
PID 106, FMI 3, Flash Code 67, Manifold Absolute Pressure Sensor Input Voltage High

The Manifold Absolute Pressure Sensor input voltage is high due to a short.‪

Section 5.22.1
Troubleshooting PID 106, FMI 3, FLASH CODE 67

Troubleshoot as follows:‪

1. Check wire 432 (light green, manifold air pressure) cavity P-1 in the Engine Sensor Harness (ESH) 30–pin connector for a short to wire 416 (gray, sensor supply voltage, 5VDC) cavity W-1 in the ESH 30–pin connector (see Figure "Engine Sensor Harness 30–pin Connector" ). If there is a short, repair or replace the wire(s), pins, and sockets.
   

   Figure 1. Engine Sensor Harness 30–pin Connector

   1. If the code is still active, go to step .
   2. If the code is not active, Refer to "5.22.2 Verification" .
2. Also check pin C (manifold air pressure ) and pin B (sensor supply, +5VDC) in the MAP Sensor connector. If there is a short, repair or replace the wire(s), pins, and sockets.
   1. If the code is still active, call Detroit Diesel Technical Service.
   2. If the code is not active, Refer to "5.22.2 Verification" .

Section 5.22.2
Verification

Verify troubleshooting as follows: ‪

1. Check the DDR to see if PID 106, FMI 3, Flash Code 67 is still active.
   1. If the code is still active, go to step 2.
   2. If the code is not active, troubleshooting is complete.
2. If the code is still active, call Detroit Diesel Technical Service.