Code P0232, qnd P0603 - Ford Powerstroke Diesel Forum
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Old 01-10-2011, 04:41 PM
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Code P0232, qnd P0603

I have a 99 superduty F-350 with a 7.3 and 173k, 4 inch exhaust, superchips tuner, lifted 6 inches.

I am getting thses 2 codes intermittently.
The first is Fuel pump relay DVR Circut fail off. I have had this looked at and they tell me it is fine.
The second is Internal CTRL MOD KAM error.
This one has shown up since the cold weather, and I have not been able to get any information on this one?

Please help.
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Old 01-10-2011, 08:44 PM
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if no one chimes in here, i would call autozone, they tell you what it is, and possible causes and solutions
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Old 01-11-2011, 01:06 PM
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Thank you will do.
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Old 01-11-2011, 01:18 PM
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The P0603 is a Very common code to see, it just means that the PCM has been pulled or the batteries disconnected at some point. The KAM stands for Keep Alive Memory (RAM I guess) has been wiped.

Nothing to worry about,,,,,,
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Old 01-11-2011, 04:44 PM
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Thank you NoRalPh.
I called autozone and they didn't know what that code meant.
I put 2 new batteries in it a few months back.
The other code they have told me could be that I need a new GP relay.
The boy explained it might be that it caused the fuel pump to stop to show a fault because it had excess pressure. Does this sound right?
When I test the relay I am getting 12 volts at each post.
I had read another post about testing the fuel pump, I opened the drain and turned the key on, the fuel came out with force.
Auto and truck diesel also said I had plenty of pressure in the fuel pump.
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