OBDII Code P0453
03-07-2007, 04:28 AM
#1
Thread Starter
Join Date: Aug 2005
Posts: 22
OBDII Code P0453
Does anyone have any experience with this code? I'mgoing to be trying to fix the issue soon. I recently changed the fuel pump but I'm not sure anything I did could cause this code to come on. I don't believe it happened in sync with the fuel pump swap, but I can't be sure so I'm not ruling anything out at this point. Let me know if you have any pointers.
03-07-2007, 04:52 AM
#2
2nd Gear Member
Join Date: Jul 2006
Location: Illinois
Posts: 171
RE: OBDII Code P0453
P0453 Evaporative Emission Control System Pressure Sensor High Input
according to http://autorepair.about.com/cs/troub...l/bl_obd_4.htm
I don't know what that means...
according to http://autorepair.about.com/cs/troub...l/bl_obd_4.htm
I don't know what that means...
03-07-2007, 06:53 AM
#3
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
RE: OBDII Code P0453
The '03 Factory manual says this about P0453--FTP is Fuel Tank Pressure[/align]
P0453 - FTP Sensor Circuit High Voltage Detected [/align]
Description: The PCM monitors the EVAP control system FTP sensor input signal to the PCM. The test fails when the signal average jumps above a minimum allowable calibrated parameter.
Possible Causes:[/align][*]FTP circuit open[*]VREF shorted to VPWR[*]Damaged PCM[*]FTP circuit shorted to VREF or VPWR[*]SIG RTN circuit open[*]Damaged FTP sensor [/ul]
Diagnostic Tips: FTP V PID reading greater than 4.50 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.
P0453 - FTP Sensor Circuit High Voltage Detected [/align]
Description: The PCM monitors the EVAP control system FTP sensor input signal to the PCM. The test fails when the signal average jumps above a minimum allowable calibrated parameter.
Possible Causes:[/align][*]FTP circuit open[*]VREF shorted to VPWR[*]Damaged PCM[*]FTP circuit shorted to VREF or VPWR[*]SIG RTN circuit open[*]Damaged FTP sensor [/ul]
Diagnostic Tips: FTP V PID reading greater than 4.50 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.
03-07-2007, 01:50 PM
#5
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
RE: OBDII Code P0453
According to the '03 shop manual it's an "inline" part of the fuel tank vapor control tube on the top of the fuel tank. It's an electrical sensor providing input to the PCM, so it could well be that it's unplugged or partially unplugged.
03-07-2007, 02:19 PM
#6
Thread Starter
Join Date: Aug 2005
Posts: 22
RE: OBDII Code P0453
Do you know if this is the connector on the top of the tank that is part of the pigtail that connects to the fuel-pump? that's the only connector I can think of. I imagine that's what it could be, because I broke the plastic piece that holds it in place, but I want to make sure before I go about lowering my tank again, because that's a pain
03-07-2007, 02:26 PM
#8
Thread Starter
Join Date: Aug 2005
Posts: 22
RE: OBDII Code P0453
Are there any known issues with using the SVT pump and harness and throwing this code or did I just make a poor connection putting it back together? I noticed you have an SVT pump too, did you have to do anything special to get it to work? Is that how you became familiar with this particular sensor?
03-07-2007, 02:33 PM
#9
4th Gear Member
Join Date: Oct 2006
Location: Kentucky
Posts: 1,460
RE: OBDII Code P0453
No,,,you didnt change the harness,correct?Installed my SVT pump..and have had no problems with this code...after all,,the svt pump assembly,,you just use the pump only..maybe you are correct,and just didnt get it plugged in enough....
03-07-2007, 02:35 PM
#10
4th Gear Member
Join Date: Oct 2006
Location: Kentucky
Posts: 1,460
RE: OBDII Code P0453
ORIGINAL: mustangmclark
I noticed you have an SVT pump too, did you have to do anything special to get it to work? Is that how you became familiar with this particular sensor?
I noticed you have an SVT pump too, did you have to do anything special to get it to work? Is that how you became familiar with this particular sensor?