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P0195 Code – What Does It Mean & How To Fix It

This is one of the most frequent OBD2 trouble codes. Read the full article below to know what it means, how to fix it, and what other codes may show related to it.


A failure with the fuel temperature sensor ‘1’ circuit is identified by the DTC code P0195. This code is part of OBD II, which monitors in real-time a variety of aspects of vehicle performance, fuel system, and emissions.


The OBDII system will activate the P0195 code in case of a problem with the Fuel Temperature Sensor ‘1’ circuit. The fuel temperature sensor has a vital role to play in informing the engine control module (ECM) of the gasoline’s temperature inside the tank.


The P0195 issue code may appear due to a number of possible causes, including the following:

  • Faulty Fuel Temperature Sensor: A malfunctioning or damaged fuel temperature sensor ‘1’ can produce inaccurate readings or fail to send any data to the ECM.  
  • Wire Problems: The fuel temperature sensor ‘1”s attached wire and connections may become damaged, corroded, or disconnected, which might result in circuit problems.
  • Issues with the sensor circuit: Short circuits or open circuits might cause inaccurate readings or total sensor failure.
  • ECM Malfunction: On occasion, the engine control module may malfunction, leading to incorrect interpretation of sensor data and activation of the code.


The following signs and symptoms may appear in the car when the P0195 code is present:

  • Check Engine Light: The most noticeable symptom is the illumination of the Check Engine Light on the dashboard.
  • Poor Engine Performance: Due to inaccurate fuel temperature measurements, the engine may have reduced power, rough idling, or reluctance when accelerating.
  • Reduced Fuel economy: A problem with the fuel temperature sensor ‘1’ may affect fuel supply and reduce fuel economy.


An experienced mechanic or expert will carry out the following procedures to diagnose the P0195 code:

  • OBD-II Scanner: An OBD-II scanner will be used to retrieve the trouble code and any related codes stored in the system.
  • Visual Inspection: To find any obvious problems, a visual examination of the fuel temperature sensor “1,” wiring, and connections will be done.
  • Fuel Temperature Sensor ‘1’ Testing: A multimeter will be used to test the sensor’s resistance and voltage in order to ascertain its operation under various engine circumstances.
  • Examining the wire: The technician will carefully look for corrosion or damage in the wire and connections.
  • ECM Testing: If all other parts are in working order, it could be necessary to test or reprogram the ECM.

Common mistakes

During the diagnosis and repair process, some common mistakes to avoid include:

  • Ignoring Wiring Inspection: Neglecting a thorough inspection of the wiring and connectors may lead to overlooking the root cause of the problem.
  • Replacing Components Without Proper Testing: It is essential to perform thorough testing before replacing any components to avoid unnecessary expenses.

How serious is this?

The seriousness of the P0195 code is determined by driving conditions and the severity of symptoms. While the vehicle is still capable of being driven, additional engine performance problems and possible damage may occur if you ignore this issue.

What repairs can fix the code?

repair manuals

Following diagnosis, the following repairs could be required to fix the P0195 code:

  • Fuel Temperature Sensor “1” Replacement: If the sensor is broken, a new one has to be replaced.
  • Wiring and Connector Repair or Replacement: Damaged parts will need to be repaired or replaced.
  • ECM Reprogramming or Replacement: The ECM could occasionally need to be reprogrammed or replaced.

Related codes

Other related codes that may accompany P0195 include P0190 (Fuel Rail Pressure Sensor Circuit Malfunction), P0191 (Fuel Rail Pressure Sensor Circuit Range/Performance), and P0194 (Fuel Rail Pressure Sensor Circuit Intermittent).


A potential problem with the fuel temperature sensor ‘1’ circuit, which may affect engine performance, is found in the P0195 DTC code. It is essential to deal with the problem as soon as possible if you see a light on your Check engine light or have experienced any engine performance problems. It is important to seek the assistance of a qualified automotive professional who can diagnose and resolve this problem so as to ensure that your vehicle operates correctly and reliably.

P0195 Code – What Does It Mean & How To Fix It