00 2500 2x4 - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 4 (permalink) Old 03-16-2010, 11:28 PM Thread Starter
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00 2500 2x4

keeps throwing a p1688 (park nutural safety performace) Put anew sensor in.. Still the same code comes back I diss conected the batterys.. for 30 mins. drove it came back touched the ends together still the light comes on. chased wires no rub throughs no nothing. Am I missing something?

Jordan

95-dodge 2500 built to the hill... - sold to litle brother
03- stroker 6.0 studs and basic BS


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post #2 of 4 (permalink) Old 03-16-2010, 11:46 PM Thread Starter
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WTf.. I cant remember the code number..

Jordan

95-dodge 2500 built to the hill... - sold to litle brother
03- stroker 6.0 studs and basic BS

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post #3 of 4 (permalink) Old 03-17-2010, 12:03 AM
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I think you have the wrong code. Here is what a p1688 is

P1688-INTERNAL FUEL INJECTION PUMP FAILURE

WHEN MONITORED
Key ON or Engine running.

SET CONDITION
Internal VP44 PCM memory, programming or hardware error.

POSSIBLE CAUSES


Good trip counter =0
Check that code again and let us know.
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post #4 of 4 (permalink) Old 03-17-2010, 12:11 AM Thread Starter
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I know what the 1689 1688 is... I had that.. fixed it.. this one is transmission controlled manufacturing controller. I forget he # of the code.. SO I look it up.. defined it more in the jtec section of my scanner and it came up as park nutural safety switch performance.

reguardless of code # i want the light to go away.. I know ECMs go bad. but.......

p0850-p/n switch performance
(diesel). . . . . . . . . . . . . . . . . . . . . . . . . .21-1138

P1899
Park/Neutral Position Switch Stuck In Park or In Gear

Jordan

95-dodge 2500 built to the hill... - sold to litle brother
03- stroker 6.0 studs and basic BS


Last edited by blackcloudCTD95; 03-17-2010 at 12:26 AM.
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