P0182

Circuit Description
The fuel temperature sensor is a thermistor which controls the signal voltage to the Powertrain Control Module (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.

Conditions for Running the DTC
The ignition switch is in the ON position

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
^ The PCM illuminates the Malfunction Indicator Lamp (MIL) on the second consecutive drive trip the diagnostic runs and fails.
^ The PCM records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the Failure Records store this information. If the diagnostic reports a failure on the second consecutive drive trip, the Freeze Frame records the operating conditions at the time of failure and updates the Failure Records.

Conditions for Clearing the MIL/DTC
^ The PCM will turn the MIL off after three consecutive trips without a fault condition.
^ A History DTC clears after forty consecutive warm-up cycles, if this or any other emission related diagnostic does not report any failures
^ The use of a scan tool.

Diagnostic Aids
A scan tool reads the fuel temperature in degrees Celsius.
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 P0182 is a hard failure or an intermittent condition.
3. This test will determine if signal circuit is shorted to ground.