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« on: 26 July 2012, 15:57:08 »
What are the symptoms, is the gearbox stuck in limp home mode i.e 3rd gear and no more than 4000 revs, is it cluncking in to gear, is it holding onto the gears longer than usuall.
First thing to do is to check the fluid level, this will at least rule out the most common problem with autoboxes, there is a perfect guide for this in the maintenance section.
The P1700 code just means that the transmission control module has sent a signal to the engine control module to illuminate the mil lamp on the dash board, once the problem has been rectified and the codes cleared the mil will not be illuminated.
P1625 suggests that the engine control relay is malfunctioning, check for signs of corosion on the pins of the relay. If it looks suspect replace the relay with a known good one.(clutching at straws with this one tho).
P0748 is transmission fluid pressure solenoid-wiring, This could be down to low fluid in the gearbox.
From my own experience i'm pretty sure that i had similar codes when i first bought mine although not the P0748 and mine turned out to be a faulty cam sensor.
Regards