P0182

Diagnostic Chart:

Diagnostic Chart (cont'd):

Wiring Diagram:

Circuit Description
The fuel temperature sensor is a thermistor which controls the signal voltage to the PCM. When the fuel is cold, the sensor resistance is high, therefore the PCM will see a high signal voltage. As the fuel warms, the sensor resistance becomes less and the voltage drops. The fuel temperature sensor is integrated with the optical sensor. This is a type B DTC.

Conditions for Setting the DTC

^ The fuel temperature is greater than 102°C (215°F).
^ The conditions were met for 2 seconds.

Action Taken When the DTC Sets
Poor idle quality during hot conditions.

Conditions for Clearing the MIL/DTC

^ The PCM will turn the Malfunction Indicator Lamp (MIL) off after three consecutive trips without a fault condition.
^ A History DTC will clear after forty consecutive warm-up cycles during which the diagnostic does not fail (coolant temperature has risen 5°C (40°F) from the start up coolant temperature and the engine coolant temperature exceeds 71°C (160°F) during that same ignition cycle).
^ Use of a Scan Tool will clear the DTC codes.

Diagnostic Aids
A scan tool reads the fuel temperature in degrees centigrade. An intermittent may be caused by the following:

^ Poor connections.
^ A rubbed through wire insulation.
^ A broken wire inside the insulation.

Test Description
The number(s) below refer to the Step number(s) on the Diagnostic Table.

2. This Step determines if DTC P0128 is a hard failure or an intermittent condition.

3. This test will determine if signal circuit is shorted to ground.