P0182

DTC P0182 Fuel Temperature Sensor Circuit Low Voltage






Circuit Description

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

Conditions for Setting the DTC

^ Fuel temperature greater than 1O2°C (215°F).
^ Conditions 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 MIL off after three consecutive trips without a fault condition.
^ A History DTC will clear when forty consecutive warm-up cycles that the diagnostic does not fail (coolant temperature has risen 5°C (40°F) from start up coolant temperature and engine coolant temperature exceeds 71°C (16O°F) that same ignition cycle).
^ Use of a Scan Tool.

Diagnostic Aids

A scan tool reads fuel temperature in degrees centigrade. After engine is started, the fuel temperature should rise steadily.

Test Description

Number(s) below refer to the number(s) on the diagnostic table.

1. This step determines if DTC PO~82 is a hard failure or an intermittent condition.

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