Code P0452, how to remove the fuel tank and access the fuel?

P0452 refers to a problem with the evaporative emission control system's pressure sensor circuit. This code indicates that the voltage signal from the fuel tank pressure sensor is higher than expected, which typically means there is a problem with the sensor or its wiring. To test a fuel tank pressure sensor, you will need a multimeter to measure resistance and voltage. Here's a step-by-step guide on how to test a fuel tank pressure sensor:

Safety precautions: Ensure that the vehicle is parked in a well-ventilated area and the engine is turned off.

Locate the fuel tank pressure sensor: The fuel tank pressure sensor is typically located on or near the fuel tank. Refer to the vehicle's service manual or consult a repair guide specific to your vehicle to find its exact location.

Disconnect the electrical connector: Unplug the electrical connector from the fuel tank pressure sensor. Inspect the connector and wiring for any signs of damage, corrosion, or loose connections. Repair or replace any faulty components if necessary.

Measure resistance: Set your multimeter to measure resistance (ohms). Connect the multimeter leads to the appropriate terminals on the fuel tank pressure sensor connector. Consult the vehicle's service manual or a wiring diagram to identify the correct terminals for resistance testing.

Compare readings: With the multimeter connected, take a resistance reading. Compare the measured resistance to the manufacturer's specifications for the fuel tank pressure sensor. If the resistance is outside the recommended range, the sensor may be faulty and require replacement.

Measure voltage: Set your multimeter to measure voltage (volts). Connect the multimeter leads to the appropriate terminals on the fuel tank pressure sensor connector. Again, consult the vehicle's service manual or a wiring diagram to identify the correct terminals for voltage testing.

Key on, engine off (KOEO): Turn the ignition key to the "On" position without starting the engine. This will provide power to the fuel system and activate the fuel tank pressure sensor.

Measure voltage signal: With the multimeter connected, observe the voltage reading. It should be within the manufacturer's specified range. If the voltage is outside the recommended range, the fuel tank pressure sensor may be faulty.

Here is the fuel tank pressure sensor location, and a video to show you how to lower the tank:

https://youtu.be/SOmd3BoE4YU

Check out the images (below). Please let us know what happens.