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Another p0748 code problem

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Old Mar 15, 2008 | 06:45 PM
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Default Another p0748 code problem

Hey guys. I did a search but eveyones Trans seems more moded than mine. I installed a Trans go in my car about 2-3 months ago (02 WS6) and about a week ago it threw a p0748 code. Its the pressure control solinoid. My car shifts fine except it shifts a little harder 1-2 than I like. Where is this solenoid and do I need to replace it or is there something else wrong?

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Vinny
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Old Mar 15, 2008 | 06:54 PM
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PO748 is (PRESURE CONTROL SOLENOID ELECTRICAL) I would check that the PCS is pluged in well the terminals have been known to break conection flat blade type and if all is good there replace the PCS.
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Old Mar 15, 2008 | 07:27 PM
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Where is it?
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Old Mar 15, 2008 | 07:50 PM
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Its the large solenoid near the 1-2 acumulator in the pan , Its the largest solenoid in the trans so easy to spot just drop the pan
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Old Mar 16, 2008 | 06:19 PM
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Just out of curiosity. If I happened to not plug it up good enough or its bad would that cause the hard 1-2 shift at low speeds I'm experiencing?

If no I plan on reinstalling the original 1-2 accumulator springs while I have the pan off. Only one problem. I can't remember which springs they were! Or if I turned the piston upside down!

Thanks for the help
Vinny
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Old Mar 16, 2008 | 07:40 PM
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If its a open circuit or unplugged yes it will cause very harsh low throttle shifts
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