Question about Cars & Trucks
Run fault codes and check for faulty TCM unit.. The engine light comes on for faults in both the engine and transmission
Posted on Jun 08, 2014
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Posted on Jan 02, 2017
chances are you don't have to replace the computer. the reason i tell you this is because you did not mention that the car is running lousy. no complaints of rough idle or missfire or hard starting. chances are that your engine speed sensor which sends the signal to the computer which then controls the transmission is most likely the culprit.. and it could just bhe that there is a loose connection between the two. if that is ok then your transmission control module is faulty. this is not the main computer, but the gobetween the trans and the ecm.. hope this helps please rate this...thanks(btw....the knock sensors control timing not the trans mission)
Posted on Sep 03, 2008
I have bad news for you
p0604 is a transmission control module
check the connection at the transmission control module if there are no connection issues than you will need to replace the transmission controll module "tcm" there is no other test for that code.
Posted on Jun 14, 2009
Transmissions these days need very little maintenance, our fluids are advanced formulas that hold up for an average of 100,000 miles, most vehicle manufactures recommend no maintenance for automatic transaxles these days.As for a transmission flush I don't recommend this because it's an expense that is not needed and possibly could loosen some contaminants setting them loose to possibly clog some of the very small passages in the transaxle requiring full transaxle service,which could include removal,dissassembly,etc of your trans.Now draining and replacing fluid is OK if that makes you feel a peace of mind but normally not needed,if you decide to do that,as far as quantity just note approx. how much fluid is drained and purchase similar amount in quarts and then refill (DO NOT OVERFILL)
start engine, let it warm up to operating temp,then check the transmission dipstick for the correct level,remember the vehicle needs to be on a level surface,hot idiling in park when you check the fluid level. Good luck !
Posted on Nov 26, 2009
I had this same problem at 113,000 miles on my Sedona and I replaced the spark plugs and wires and it took care of this missing. It's an expensive job unless you do it yourself. However, the check engine light came back on so I have to replace the o2 sensor also. Here is a link to a tutorial on how to change the spark plugs. This is the best information you will find for changing spark plugs on a Sedona.
Posted on Jun 09, 2010
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