OBD II MONITORS P1000 CODE
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OBD II MONITORS P1000 CODE
I have a F-350 crew cab dually with a 460. I am not passing my California smog test. When I first power up my truck, it gives me a P1000 message on my scanner. This is not a hard error. The MIL never lights. <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
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I found a short that was bringing the computer voltage down, when the truck was turned off. Prior to finding the short, all of my monitors would show as incomplete, at power-up. Now, after fixing the short, some of the monitors show as complete, but 4 monitors show as incomplete at power-up (Catalyst monitor, Oxygen sensor monitor, Oxygen sensor heater and EGR monitor).<o></o>
If I drive the truck about 10 miles (complete a ”drive cycle”) , all of the monitors show as complete and the P1000 goes away. After I turn the power off for about 15 seconds, the same 4 monitors show as incomplete when the truck is turned back on (the P1000 comes back).
Is this a matter of completing many drive cycles to make this issue go away?<o></o>
fficeffice" /><o></o>I found a short that was bringing the computer voltage down, when the truck was turned off. Prior to finding the short, all of my monitors would show as incomplete, at power-up. Now, after fixing the short, some of the monitors show as complete, but 4 monitors show as incomplete at power-up (Catalyst monitor, Oxygen sensor monitor, Oxygen sensor heater and EGR monitor).<o
></o>If I drive the truck about 10 miles (complete a ”drive cycle”) , all of the monitors show as complete and the P1000 goes away. After I turn the power off for about 15 seconds, the same 4 monitors show as incomplete when the truck is turned back on (the P1000 comes back).
Is this a matter of completing many drive cycles to make this issue go away?<o
></o>
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Joined: Sep 2006
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Two items.
First it sounds like a fuse is out for the PCM memory.
This will reboot the PCM into diagnostics everytime you start the truck and cause all diagnostics to be re-run and setting the 1000 code until all monitors pass.
Second, the EVAP system may take much longer than a 10 mile drive cycle.
I don't know what that model has for EVAP so if it's the last to be tested and clear, that is why.
Good luck, let us know what you found.
First it sounds like a fuse is out for the PCM memory.
This will reboot the PCM into diagnostics everytime you start the truck and cause all diagnostics to be re-run and setting the 1000 code until all monitors pass.
Second, the EVAP system may take much longer than a 10 mile drive cycle.
I don't know what that model has for EVAP so if it's the last to be tested and clear, that is why.
Good luck, let us know what you found.
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NeilTDeal
1987 - 1996 F150 & Larger F-Series Trucks
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Jun 20, 2014 02:03 PM
