P0455 and P0452 have to do with fuel vapor leaks, will not cause a starting problem.
P0340 is a cam sensor code.
You need to diagnose for a failed cam sensor.
P0452 is fuel tank pressure sensor circuit fault. I have never heard of a P0440, but 400 series codes are in the emmissions, i.e., EGR and Evap system. I would try to fix the 452 and see if the 440 goes away with it.
Trouble code P0452 means: Evaporative Emission System Pressure Sensor/Switch Low Input
The code P0452 on a Buick LeSabre is a fuel tank pressure sensor circuit low voltage warning. This sensor is on the top of the fuel tank.
Trouble code P0452 means: Evaporative Emission System Pressure Sensor/Switch Low Input
Trouble code P0452 means: Evaporative emission control system,pressure sensor low input
Trouble code P0452 means: Evaporative Emission System Pressure Sensor/Switch Low Input Change out the sensor at that will fix your problem
Trouble code P0452 means: Evaporative Emission System Pressure Sensor/Switch Low Input Trouble code P0453 means: Evaporative Emission System Pressure Sensor/Switch High Input
Fuel tank pressure-check your gas cap etc.
P0452 Evaporative Emission System Pressure Sensor/Switch Low Input I just fixed this the other day. First of all make sure your fuel cap is on tight as this may be the cause. If the service engine soon light is still on then do the following: 1) Your Fuel Tank Pressure Sensor might be bad or it might have broken like it broke on mine. Or.... 2) If it is broken you have to buy a new fuel pump because the Sensor is not sold as a separate part on your vehicle.
Code P0452 on a 1998 Buick LeSabre indicates a fault with the fuel tank pressure sensor. This sensor measures the pressure inside the fuel tank and helps monitor the evaporative emissions system. The issue may be due to a faulty sensor, damaged wiring, or issues with the fuel tank itself. It is recommended to have the sensor and its wiring inspected and tested to determine the exact cause of the problem.
i have a izuso rodeo 1999 3.5 liter i need how i fix the code po452 were is the location is the sensor and how is the sensor
Code P0452 means "EVAP pressure sensor signal low" I'm a licensed mechanic currently on the hunt to fix this problem on a Rodeo I'm working on. I'll keep you posted if I figure the problem out. Currently I'm looking at replacing the PCM as my current tests have narrowed it down to that or faulty wiring between the fuel tank and the PCM.