The cheapest thing to do is to replace the linear solinoid and flush the transmission. First, your mechanic will test drive the vehicle to see if there is a noticeable problem with the transmission fluid pressure. Symptoms can range from nothing other than a check engine light, to poor, harsh, and slipped shifting of the transmission. The list of automotive Makes at the right edge of the screen. Look up the other , please use the search box.
If operations are as normal, the code could just be a faulty sensor. Monitor Conditions When Monitored: Prior to a shift into 1st gear. . They pulled the trouble code and sure enough, bad pressure switch. Enter the 5 character trouble codes in the search box and submit the search.
Need help with a P0843 code? YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. You do have to remove the front splash shield to get at it and that took me about an hour to do. I started down the road again and soon realized that I had no 5th gear my Honda Fit has a 5 spd auto trans. If the solenoid switch valve movement is not confirmed i. While driving at approx 55 mph, the check engine light came on and the D drive indicator light on the dash began flashing. If the transmission has a fault, you should see a diagnostic code that begins with P07xx or P17xx.
If it is P0845, it is the 3rd clutch pressure switch circuit issue. Common mistakes when diagnosing the P0843 code Hastily replaced parts may only hide the real problem which could be dirty transmission fluid or internal damage. We are not responsible for any actions you take on your vehicle. The associated symptoms of a P0843 will help you better determine the root of the problem. If there is no change then the transmission will need to be replaced.
If the shift control solenoid does not repair the problem, the transmission will have to be replaced. Very informative post as usual Twiggy twiggy02919 wrote: P0854 didn't come up as a code in a search for the codes, maybe it was a P0845 code? If the code does not repeat then do the road test two more times just to be sure. They told me it was completely safe to drive 5th gear was working again but the check engine light stayed on and that the part should arrive in a few days and to bring it back then. If your are for a different car, select that vehicle series before searching for the diagnostic codes because not all used by one manufacture are used by the other makes. If it is, that will cause the light to come on.
Thank you for using FixYa, have a nice day. When shifting into 1st gear, a special sequence is followed to insure solenoid switch valve movement into the downshifted position. If it is P0845, it is the 3rd clutch pressure switch circuit issue. If the code does not repeat during the three acceleration tests, then the system had an intermittant fault. Replacing the shift solenoid and flushisng the transmission with genuine Honda automatic transmission fluid may eliminate harsh shifting characteristics.
A broken internal spring can cause the same issue. I took it to the dealer the next morning and they said before looking at it that a couple of the Fits had come in with a bad pressure switch and that sounded like the problem. If there are no adverse conditions, your mechanic will move on to test the pressure sensor with a digital multimeter. No 1st gear 2nd gear is substituted. How does a mechanic diagnose the P0843 code? The green D4 drive light may also blink. P0854 didn't come up as a code in a search for the codes, maybe it was a P0845 code? Honda has issued a bulletin on this issue. Some customers choose to live with the issue due to the cost involved.
The spring is deep inside the transmission and would require complete disassembly for replacement, and it's ususally more cost effective to replace the transmission as a unit. How serious is the P0843 code? If you have any doubt as to repairs on your vehicle, please contact your technician. I restarted the car and the D indicator stopped flashing, but the check engine light remained on. They also apologized quite a lot and agreed that a brand new car with only 1500 miles on it shouldn't be having transmission issues. The pressure control solenoid will be tested next as well as all associated wiring before determining an internal transmission problem is the culprit. What causes the P0843 code? The seriousness of a P0843 depends on how the vehicle drives with the code. Posted on Jan 25, 2011 we can not answer what you can do or fix.
Based on your symptoms of excessive shock in 1-2 upshifts, the book suggests the shift solenoid valve C could be defective, or the 2nd clutch pressure switch or the circuit could be defective, or there could be foreign material in the separator plate orifice, or seven other possible causes. You do have to remove the front splash shield to get at it and that took me about an hour to do. This means that the fluid pressure needed to change gears, coast, hold a stopped position, etc. Jul 20, 2015 take it in, get it fixed? The information contained on this site is presented for informational purposes only. What repairs can fix the P0843 code? If not, driving may become difficult. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.