Question about Cars & Trucks
P0452 Saturn Fuel Tank Pressure Sensor Circuit Low Voltage
"P0452 - Evaporative Emission Control System Pressure Sensor Low Input. Evaporative Emission Control System Pressure Sensor Low Input indicates a low voltage problem in the Fuel Tank Pressure Sensor (FTPS). What the fuel FTP sensor does is convert fuel tank absolute pressure into electrical signals and inputs the signal to the ECM/PCM, (Computer).
First thing to do is make sure the gas cap is good and tightened properly. Then check the vacuum lines and wiring at the FTPS (Location-Fuel Tank) to be sure they are good, clean and tight.
Barring a wiring problem it can be a bad FTPS or PCM. "
I copied this blog on the code p0452. So, check gas cap, check vacuum lines from fuel tank and trace the lines making sure there is no break. check wire plug on the fuel tank pressure sensor.
Posted on May 16, 2014
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Posted on Jan 02, 2017
EVAP fuel tank pressure sensor low output. It sounds like the charcoal -filled canister, it's near the gas tank in a cylinder shape.The canister may have cracks or a hose is leaking around the area and it will give a fault code of PO452. Are you smelling any odors or emission smell from the car?
Posted on Feb 26, 2010
The following results can be found on http://www.blujag.co.uk and would appear to indicate a fuel system problem. hope this helps
Fault Code P0452
Indicates a Generic Power-train fault
The fault is generally due to a problem in the Emission Control area
Fault Description: Evaporative Emission Control System Pressure Sensor Low Input
Fault Code P1642
Indicates a Manufacturer Specific Power-train fault
The fault is generally due to a problem in the Computer & Output Circuit area
Fault Description: Fuel Pump Monitor Circuit High Input
Posted on Jul 18, 2010
SOURCE: My check engine light came
Probably nothing. These are EVAP leak codes. You have a fairly new vehicle so between that and the fact that the vast majority of EVAP leak codes are caused from gas gaps. Chances are last time it was fueled, the cap did not get placed on correctly or tightened enough. If your cap clicks when its tight, make it click 6 times before you close the fuel door. That is more than likely all that's wrong.Your fuel system (tank, lines, etc.) will pressurize itself periodically and it will monitor that pressure over time. It looks to make sure that the pressure remains constant indicating no leaks and when it releases the pressure it checks to make sure the pressure has in fact dropped. If your fuel cap is not sealed COMPLETELY, some of that pressure will escape through that cap. The EVAP system records this as a leak and will throw a check engine light. This light does not come on immediately after fueling, it may be a few days even depending on the drive cycles (how many starts, stops and distance of driving). They will usually clear themselves too after so many drive cycles of everything checking out normal, which again, can be a few days. Do not worry yourself though. Even if this code is not caused by the cap, it does not affect drivability or reliability. This will not leave you stranded on the side. This is one of those stupid government emission things.
Posted on Jan 08, 2011
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