The OBD-II trouble code P1190, known as „FTS High” or „Fuel Pump Temperature Sensor High,” indicates that the engine control module (ECM) has detected an abnormally high voltage signal from the fuel pump temperature sensor. This sensor plays a crucial role in monitoring the temperature of the fuel pump to ensure optimal performance and prevent overheating. When this code appears, it typically points to issues within the fuel delivery system that could affect your vehicle’s reliability and efficiency. Keep scrolling to discover practical insights on how to identify this problem, understand its common causes, and learn effective repair strategies to get your car running smoothly again.

What symptoms might indicate the P1190 error?

This issue can cause noticeable changes in vehicle behavior that may affect driving comfort and safety. Recognizing the symptoms early can help prevent further complications.

  • 1. Engine Overheating: The engine temperature gauge may show higher than normal readings.
  • 2. Reduced Fuel Efficiency: The vehicle might consume more fuel than usual.
  • 3. Rough Idling: The engine may run unevenly or vibrate when idling.
  • 4. Power Loss: Noticeable decrease in engine power during acceleration or cruising.
  • 5. Hard Starting: Difficulty starting the vehicle, especially after it has been running for a while.
  • 6. Check Engine Light: The warning light on the dashboard may illuminate intermittently or stay on continuously.

      • Common reasons that can lead to error code P1190

      • 1. Faulty Fuel Pump Temperature Sensor: The sensor itself may be malfunctioning, causing inaccurate temperature readings.
      • 2. Wiring Harness Issues: Damaged or corroded wiring can disrupt the signal from the temperature sensor to the control module.
      • 3. Fuel Pump Overheating: Excessive heat generated by the fuel pump due to mechanical or electrical problems can trigger high temperature signals.
      • 4. Poor Electrical Connections: Loose or poor electrical connections can result in intermittent or high resistance signals affecting sensor data.
      • 5. Faulty Fuel Pump Control Module: A malfunctioning control module may incorrectly interpret sensor data, causing false high temperature warnings.

      P1190 at-home error code check step by step

      When your vehicle signals a potential issue with the fuel pump temperature sensor, it’s possible to perform a basic diagnosis at home before heading to a mechanic. Using simple tools and an OBD-II scanner, you can effectively determine whether the P1190 – FTS High – Fuel Pump Temperature Sensor High code is caused by a faulty sensor.

      Start by connecting an OBD-II reader to your car’s diagnostic port, usually located under the dashboard. Access live data and monitor the fuel pump temperature sensor readings while the engine is running; if the value appears abnormally high or remains constant regardless of engine temperature changes, this indicates a potential sensor fault. Next, visually inspect the sensor and its wiring for signs of damage, corrosion, or loose connections. If accessible, measure the sensor’s resistance with a multimeter according to your vehicle’s service manual specifications—values outside the recommended range confirm malfunction. By combining these steps, you can confidently assess whether the fuel pump temperature sensor requires replacement without professional equipment.

      P1190 error repair at home: What can you do yourself and when do you need a mechanic?

      • 1. Sensor Connector Check: Inspect and clean the fuel pump temperature sensor connector to ensure there is no corrosion or dirt causing poor contact.
      • 2. Wiring Inspection: Examine the wiring harness for any visible damage, such as frayed wires or loose connections, and secure or repair them if necessary.
      • 3. Sensor Reset Procedure: Disconnect the vehicle’s battery for about 10 minutes to reset the engine control unit, then reconnect and check if the error persists.
      • 4. Professional Diagnostic Required: If the issue remains after these steps, seek assistance from a qualified technician to perform advanced diagnostics and sensor replacement if needed.

      Consequences of error P1190 if you don’t fix it in time

      Ignoring this issue can cause significant long-term damage and operational inefficiencies. It is crucial to address it promptly to avoid severe consequences.

      • 1. Engine Overheating: Prolonged sensor malfunction may lead to undetected overheating, causing irreversible engine damage.
      • 2. Fuel System Degradation: Continuous exposure to abnormal conditions can deteriorate fuel pump components, reducing their lifespan.
      • 3. Decreased Fuel Efficiency: Faulty readings can result in improper fuel delivery, leading to increased fuel consumption over time.
      • 4. Increased Emissions: Inaccurate sensor data can cause incomplete combustion, contributing to higher pollutant output.
      • 5. Engine Performance Issues: Persistent sensor errors may cause rough idling, misfires, or loss of power during acceleration.
      • 6. Costly Repairs: Neglecting the problem often results in compounded damage requiring expensive mechanical interventions.
      • 7. Safety Hazards: Overheating or fuel system failures increase the risk of fire or sudden engine shutdown while driving.

          • Here’s how to prevent the P1190 error with a few simple steps

          Maintaining the proper function of your vehicle’s fuel pump temperature sensor is essential for optimal performance. Implementing preventative measures can help avoid the P1190 error code related to high fuel pump temperature sensor readings.