P0453 - EVAP Sensor high output

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May 8, 2014
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SE Michigan, USA
I replaced the fuel pressure sensor back in June 2019 and worked great until now. I'm having second thoughts here as what I should do: replace the sensor and float sensor on the original pump or replace the whole 9 yards. The sensor is a Duracrash from Autozone that replaced a failed ACDelco of 18 years.

BlueDriver screen shows this:

Code: P0453 - EVAP System Pressure Sensor/Switch Circuit High (Confirmed, Pending, and Powertrain)
Description: Fuel Tank Pressure Sensor Circuit High Voltage
Possible causes:
FTP sensor connector is damaged (check pins for damage and for moisture)
FTP sensor ground circuit is open or it has high resistance (fuse)
FTP sensor has failed (will verify with my multimeter set to Ohms)
FTP sensor signal circuit is shorted to voltage
PCM has failed (never this).

Fixes:
Not showing up anymore in the BlueDriver app after the update.
 
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