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P0184 is a diagnostic trouble code (DTC) for "Fuel Temperature Sensor "A" Circuit Intermittent". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
Fuel Temperature Sensor "A" Circuit Intermittent
P0184 is a generic OBD-II code indicating that the fuel temperature sensor A is intermittent; either the sensor input is not steady and goes in and out of operation limits, or the fuel temperature in the fuel tank or fuel rail is erratic beyond specified limits.
The engine control module (ECM) detects that the sensor circuit is malfunctioning if the sensor input is not steady, as designed for the sensor.
Corroded connector to the sensor
The engine will run normally if the sensor is intermittent, unless the fuel is contaminated.
Excessive additives in the fuel can cause erratic sensor readings and cause the fuel to boil off at lower temperatures or freeze too early.
The ECM sets code P0184 to memory and turns on the Check Engine Light.
Scans codes and documents the freeze frame data, then clears the codes to verify code returns
Does a visual check of all the wiring and connections to the sensor, checking for breaks in the wiring or loose connections
Disconnects connection to the sensor and checks to see if the sensor is testing within specifications while tapping lightly on the sensor
Follow these simple guidelines to prevent misdiagnosis:
Do a visual check of connections to the sensor to make sure they are making good contact to the fuel temperature sensor.
Check the fuel for excessive additives that can cause sensors to become erratic.
Drivability symptoms could result from erratic input from the fuel temperature sensor due to extremely hot or extremely cold fuel temperature.
The engine may misfire, hesitate and stall if the fuel temperature exceeds normal operating temperatures due to temperature sensor circuit malfunction, or if the fuel rail gets too hot or too cold.
The code P0184 is used on diesel engines with fuel heaters and on gasoline engines to monitor the fuel temperature in the fuel tank or at the fuel rail. Follow the manufacturer's recommended testing procedures for the vehicle and type of fuel you are working on.
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