Missy1631

I have been chasing codes with my 06 IS350 F sport for awhile now. It started with a P0453 that I have replaced charcoal canister, ECM, fuel pressure sensor, fuel tank pressure sensor. Still throwing the P0453. After replacing the fuel pressure sensor car began running extremely bad at low rpm and misfiring but over 3000rpm it slightly runs better. Anyone have any luck figuring out how to fix these codes?

2013FSport

iTrader: (2)

https://www.engine-codes.com/p0453_lexus.html

Code Mean?5 hours after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in the Evaporative Emission (EVAP) system. The Engine Control Module (ECM) monitors for leaks and actuator malfunctions based on the EVAP pressure. The leak detection pump creates negative pressure through the reference orifice. When the system is normal, the EVAP pressure is between 97 to 100 kPa(abs) [726 to 750 mmHg(abs) (Typical value)] and saturated within a minute. If the canister pressure sensor voltage output (pressure) is higher than 4.9 V: 123.761 kPa(abs) [928.331 mmHg(abs)], the ECM interprets this as an open or short circuit in the canister pressure sensor or its circuit, and stops the EVAP system monitor. The ECM then illuminates the MIL and stores the Diagnostic Trouble Code (DTC).The Canister Pump Module is attached to the EVAP Canister and contains the Canister Pressure Sensor, the Leak Detection Pump, and the Vent Valve.


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You have eliminated what it isn't. That leaves what is... I'd start with rodent inspection of affected area. As in, maybe a small air leak is the root cause.

If you can, I suggest getting your own code reader (a phone a $40 will do it), and start reading the freeze frame data that says when it happens.

That said, I've never seen anyone have this issue. Bees buidling homes could be another issue. Whybthis makes the car run so bad is beyond me. Hopefully someone else has some ideas.