P0185 - Fuel Temperature Sensor 'B' Circuit Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Fuel Temperature Sensor
  • Fuel Temperature Sensor harness is open or shorted
  • Fuel Temperature Sensor circuit poor electrical connection

Tech notes

Replaced Fuel Temperature Sensor

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0185 Description

The fuel tank temperature sensor is used to detect the fuel temperature inside the fuel tank. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as the fuel temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
OBDII Code P0185 - Fuel Temperature Sensor 'B' Circuit Malfunction - AutoCodes.com

P0185 Information for specific makes

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P0185 Comments

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