P1389 Code after new PCM
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Professional
Joined: Feb 2017
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From: Port Saint lucie
Ground cable going to pcm had 0.3 so that’s good, dg/or and tan wire were at 10 volts when cranking(my battery needs to be charged for all the cranking lol). I took the computer out and sent it back
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Joined: Apr 2010
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From: Clayton MI
Get a different PCM, plug it in, see what ya get.
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Professional
Joined: Feb 2017
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From: Port Saint lucie
according to them they do, but he insisted they will send me a new one to be safe lol. Told him the tests I ran and everything checks out and he said “Chrysler’s” are weird like that. I should get the new one by Monday-Wed
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Joined: Dec 2024
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I’m literally having the same code and problem
Accidentally burnt out my old pcm by coolant temperature sensor wires hitting 12v alt cable. The truck had a no bus on mileage and wouldn’t do anything. After purchasing a new pcm already programmed for my truck I put it in and now it cranks but won’t start. The mileage is showing back up but now I’m getting a p1389 code. I swapped wiper motor relay and cleaned the pcm ground cable up real good and still nothing. All fuses have been checked also!
The coolant temp sensor is completly shot and I’m waiting on a new connector so I just have the wires looped Incase that’s causing a no start also. The new battery is reading only 8 bolts on anometer
The coolant temp sensor is completly shot and I’m waiting on a new connector so I just have the wires looped Incase that’s causing a no start also. The new battery is reading only 8 bolts on anometer
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Professional
Joined: Feb 2017
Posts: 182
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From: Port Saint lucie
if you didn’t fix this yet it ended up being a faulty pcm!