Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is having trouble reading the temperature of the fuel tank. It's like when a thermometer is broken and can't tell you how hot or cold it is.
This code indicates that there is an issue with the circuit that reads the temperature of the fuel tank. The sensor may not be sending the correct information to the car's computer.
The P1456 code is triggered when the Powertrain Control Module (PCM) detects a malfunction in the circuit of the fuel tank temperature sensor. This sensor is responsible for monitoring the temperature of the fuel in the tank and ensuring optimal fuel delivery and emissions control.
• Check Engine Light is on
• Poor fuel economy
• Inconsistent engine performance
• Faulty fuel tank temperature sensor
• Damaged or corroded wiring or connectors
• Faulty PCM
PCM: Powertrain Control Module, the vehicle's computer that controls engine and transmission functions.
OBD-II: On-Board Diagnostics, a standardized system for self-diagnostics and reporting in vehicles.
• Use an OBD-II scanner to confirm the code.
• Inspect the fuel tank temperature sensor and its wiring.
• Test the sensor for proper operation using a multimeter.
• Replace the faulty fuel tank temperature sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$100 - $300
Moderate
• Honda Accord
• Honda Civic
• Acura TL
• Regularly inspect and maintain the vehicle's wiring and connectors.
• Perform routine checks on the fuel system.
• Use high-quality fuel to prevent sensor contamination.
Sensor Issue
• Have the vehicle inspected by a professional if the Check Engine Light is on.
• Avoid driving long distances until the issue is resolved.
• Regularly maintain the vehicle to prevent future issues.
Check with your vehicle manufacturer or warranty provider for coverage details related to emissions and sensor issues.
The P1456 code has been reported in vehicles with older fuel system designs, particularly in models from the late 1990s to early 2000s.
Moderate – While the vehicle may still operate, it is advisable to address the issue soon to prevent further complications.
Driving with a malfunctioning fuel tank temperature sensor may affect emissions and could potentially lead to a failed emissions test.
• Vehicle at operating temperature
• Fuel tank at least half full
The fuel tank temperature sensor is typically located on or near the fuel tank, often integrated with the fuel pump assembly.
Q: Can I drive with a P1456 code?
A: You may be able to drive, but it's best to fix the issue soon to avoid potential problems.
Q: Will a P1456 code affect my fuel economy?
A: Yes, it can lead to poor fuel economy due to incorrect fuel delivery.
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