1999 Chevrolet S10 Blazer: OBD Error Code P0452?

Check Engine Light Code P0452.

Its Fuel System related error code.

The P0452 error code is pointing to a fault in the Fuel Tank Pressure Sensor.
On Chevy Blazer the FTP Sensor is mounted to the top of the fuel pump assembly, at the top of the fuel tank.
To located and replace this sensor the tank will need to be dropped. Carefully inspect the electrical connector and harness to the sensor for any loose, broken or rubbed through wires (this is actual very common! Inspect carefully!). If the visual inspection checks ok, replacing the sensor should solve the problem.

For more help see the diagram shown below for parts location:----------

Fuel tank pressure sensor

This details and diagrams will help.

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