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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1037 (Engine Controls Diagnosis - 6.6L (LLY) (DTC P0016 To DTC P0237)) >> Diagnosis >> DTC P0168 >> Circuit Description

Circuit Description

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The fuel temperature sensor is a thermistor type sensor. The engine control module (ECM) supplies 5 volts and a ground circuit to the sensor. When the ECM detects a fuel temperature sensor above a pre-determined value, a type C code, no malfunction indicator lamp (MIL) sets. A fuel cooler located in front of the fuel tank is used to help keep the fuel temperature at an acceptable limit.

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