The check engine light of my 2005 corolla le car was on a week ago. After a check, it is P0741error. I brought it to toyota dealer and they told me to spent $800 to replace the solenoid and the fliud. But...
Thanks for the detailed question.
Code P0741 relates to "Torque Converter Clutch Solenoid Performance".
The good news is that this code has told you where to look for the problem - the SOLENOID has detected an electrical issue inside the transmission.
There can be a few causes for this code to trigger - Low transmission fluid; Contaminated Fluid; Faulty torque converter clutch solenoid; bad wiring harness or connectors (inside the transmission); or as a worst case, an internal mechanical problem.
So, the first place to start is to study the fluid - Trans Fluild is the lifeblood of the transmission. Low, high or bad fluid can cause havoc on a transmission, so check this first.
The downside is, if the fluid is ok, then the mechanic will need to open up the transmission to test the Torque Converter Solenoid and associated components. This is where the cost comes into it.....most of the cost of repairing transmissions comes from the labour hours required to remove a transmission and get at the components. Removing a transmission from a vehicle for further inspection, can take around 3-5hrs + inspection time.
However, many transmission designs do allow access to the electrical solenoids, without actually removing the trans from the vehicle. If this is possible with your corolla, then labour should only be around 1-2hrs to complete diagnostics and verify the fault/s.
I would advise against a replacement transmission, as in many cases this is unneccessary.
Instead, try the diagnostic approach first (as listed above) - I suspect it will be an electrical problem, bad wiring or a faulty solenoid. You can then make a judement call on whether to have it repaired, or replaced - your call.
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May 07, 2011 |
Toyota Corolla Cars & Trucks