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Electronic Control System Signature, ISX and QSX15 Engines – FAULT CODE 546

Fuel Pressure Sensor Circuit


Overview

CODE REASON EFFECT
Fault Code: 546
PID: P094
SPN: 94
FMI: 3/3
LAMP: Yellow
SRT: 

High voltage detected on the fuel pressure sensor circuit.

Engine will run derated.
Fuel Pressure Sensor Circuit
SMALL | MEDIUM | LARGE

Circuit Description

The fuel pressure sensor provides the fuel supply pressure signal to the electronic control module (ECM).

Component Location

The fuel pressure sensor is located on the fuel delivery housing to the left of the front fueling actuator.

Shop Talk

This fault indicates that signal pin 29 on the ECM has been shorted on the circuit to at least positive (+) 5 VDC.

Refer to Troubleshooting Fault Code t05-546.

Last Modified:  26-Oct-2010
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