What causes code 1740 to appear - 2001 Dodge Ram 1500 Truck 2WD

Where did you get code? whomever ran the diagnostics should have told.Anyone can a $19.00 scanner and it comes with a list of codes. Search online for code p1740 answer took less than 5 seconds. All North American vehicles use OBD 2 codes and the are available on line for free. If the person that runs diagnostics does not have a list of codes and know what the mean, I would not use them.

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code 1740 refers to AT -4th clutch pressure switch===causes--wiring--range position switch---4th clutch pressure switch---ECM
code 1750 refers to AT-hydraulic system mechanical failure===causes--wiring --shift solenoids--ECM ---transmission mechanical fault.

The computer is running checks on the overdrive and torque converter systems and see a problem. Possible dirty fluid or low fluid level or open in solenoid.

Four digit codes are brand specific. The only info I have on 1740 for a Ford product involves the transmission but not a specific part.
Its possible the code was a fluke since it went off, but I would want someone to check it out just in case.

P1740 Torque Converter Clutch Inductive Signature Malfunction
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volvo vida dice

You have to have the vehicle properly diagnosed,
starting with any codes you have,to determine
what if anything gets replaced

Cost depends ,as you know, on parts ,labor & the merchant
you choose

Codes have nothing to do with replacing parts
or telling you what is wrong

That means there is a problem with the over drive solenoid. I hope this helps.

That code P1740: translates to "torque converter clutch solenoid or misfire".

need to check the wiring in the column to the od button it rubs the metal shorting it out in turn causing the blink with no mechanical problems