P1401, P1000, and P1780 - TCCoA Forums
 
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post #1 of 5 (permalink) Old 09-27-2006, 04:47 PM Thread Starter
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P1401, P1000, and P1780

Sorry for posting this without searching, but for some reason search doesn't work on my friends computer?

Alright. Today I had a check engine light come on, and went to get the codes scanned.

I came up with

P1401 DPFE CKT High Voltage
P1000 OBDII System Checks Incomplete
P1780 TCS Out of Self Test Range.

Not sure what these codes mean. One more thing I might add, is that the car is running EXTREMELY rich all of a sudden. Almost smells like alcohol.

Any help with these would be appreciated, and like I said..for some reason search will not work on this computer, and my compy is down as of now.
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post #2 of 5 (permalink) Old 09-27-2006, 06:09 PM
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Well code P1000 is probably caused by code P1401 since P1401 deals with an emissions control system. P1780 points to the Transmission Control Switch (MLPS?). Is the O/D light flashing and is the transmission working properly?

Rich running is likely caused by the MAF sensor but there could be something else going on there. Is the MAF clean? Also, how are the plugs and wires? Misfires can make it run rich too.

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post #3 of 5 (permalink) Old 09-27-2006, 11:38 PM Thread Starter
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Well, I know the DPFE has already been changed once before...probably in the last 20,000.

As far as P1780 goes, the O/D light is not flashing, and the transmission works perfectly, even with it being original and having 172,xxx miles on it.
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post #4 of 5 (permalink) Old 09-28-2006, 07:36 AM
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Year and model of the vehicle?. . . . .I would say if it is an early OBDII system and it is running this rich, then it sounds like it could possibly be the EEC. . . . .Is it running so rich that gasoline (liquid) is coming out of the exhaust?

Currently In the Short Bus Garage:
2 - '94 T-bird LX's 4.6L (one with 300,000+ miles and one with 200,000+ miles)
1 - '97 Mark VIII LSC - INTECH V8 (120,000+ miles)
1 - '97 F150 XLT 4x4 Flareside, 4.6L (130,000+ miles) - Currently being dismantled and rebuilt with upgrades!
1 - '00 Mustang GT (likes to accelerate with the brake on!), 4.6L (60,000+ miles - only comes out when I need to get somewhere fast.)

oh yeah, and they all have 4R70W's
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post #5 of 5 (permalink) Old 09-28-2006, 06:00 PM Thread Starter
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95 Cougar XR7.

It's not running rich enough to have fuel coming out the exhaust. Do you think that wreck I was in could of done something to the computer?

The guy hit right behind where the computer is mounted. Or how about a ground?
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