P1705: Short in Transmission Range Switch Circuit.
So you changed the switch but didn't fix the short in the circuit. Check the wiring harness or connector for a short. Follow the harness and look for chaffed insulation or rubbing.
SOURCE: Check engine and d4 lights on
d4 is flashing as a trouble code for the automatic transmission... i would say without research that it is a code for a transmission solenoid. maybe while washing the car some water got in and caused a short...these solenoids are usually weatherproof....you could try disconnscting the battery for 30 secs..to clear the trouble code and then start the car. remember you may lose your preset info!
SOURCE: where is the tcu in a 2002 honda accord
it is the Transmission Control Unit. you have to find the reason why the TCU is flashing the D4 fault code. not replace the unit. have your vehicle scanned for another code. your transmission or transaxle is giving you a warning that something is wrong .
SOURCE: 1992 honda accord stuck in 4th gear
TCU (Transmission Control Unit) Located behind the Passenger Kick panel. it will have a burnt diode inside and can be purchased on ebay for about 79.00 with exchange.
Lugnut61
SOURCE: Check Engine code: P1751 D4 code:
Hello alex, You said " Key conditions I described like e.g. "cold engine" would probably eliminate conditions 4) and 5) or I cannot understand how PCM or hydraulic control can be affected by a cold engine?" O.K. One way a cold engine or lets say, "cold oil" can effect hydraulic controls is, cold oil is thicker oil and "old" cold oil is sticky. This can and does cause things to stick or work slow enough to seem inoperative (in the cold). Now if this was my car I would start by checking for loose or broken wires, at or going to any controls to the transmission. Also if you live in the north, Ice and road salt can corrode wire ends inside plugs. This is one way cold can effect your PCM or TCM is these plugs and or connections at these Control Mods. These controls need to have dielectric grease on the contact ends of the plugs. As this grease gets old it looses its ability to transmit electrical signals. Old grease turns orange to yellow, new grease is kind of a milky clear. The old grease is worse than no grease. So, check any wires / plugs to the transmission, looking for broken wires / corroded ends in the plugs. Clean the plugs of any old grease / dirt / corrosion. You may have a bad Shift solenoid valve or you need to change the transmission fluid and filter. This would be my first steps to fixing your problem. Check this and repost if you find all is well with your wiring and trans. fluid.
SOURCE: 1995 honda accord D4 light flashing
engine check light does come on if your VSS doesn't work.
i suggest you use a car diagnostic tool check your car.
mvci honda toyota have a look.
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