CUMMINS FAULT CODE 266

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FAULT CODE 266

Engine Fuel Temperature – Data Valid But Above Normal Operating Range – Most Severe Level

Overview

CODE

REASON

EFFECT

Fault Code: 266

Engine Fuel Temperature – Data Valid But Above Normal

Power derate and possible engine shutdown id engine

PID:

Operating Range – Most Severe Level.

protection shutdown feature is enabled.

SPN: 174

FMI: 0

LAMP: Red

SRT:

Engine Fuel Temperature Sensor 1 Circuit – Power Generation

Engines

Engine Fuel Temperature Sensor 1 Circuit – Marine En

Circuit Description

The engine fuel temperature sensor 1 is used by the engine control module (ECM) to monitor engine fuel supply temperature. The ECM monitors the voltage on the engine fuel temperature signal pin and converts this to a temperature value. The engine fuel temperature value is used by the ECM for the engine protection system.

Component Location

The engine fuel temperature sensor 1 is located on the fuel filter housing. Use the following procedure for a detailed component location view. Refer to Procedure 100-002 in Section E.

Shop Talk

All Temperature Sensors

  • The resistance of the sensor varies with the temperature. If the sensor is operating properly, the observed reading will be comparable to the values in the following table.

Temperature (°C)

Temperature (°F)

Resistance (ohms)

0

32

30k to 36k

25

77

9k to 11k

50

122

3k to 4k

75

167

1350 to 1500

100

212

600 to 675

Refer to Troubleshooting Fault Code t05-266.

Last Modified: 29-Nov-2012

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