Code p0471b and code p1860b preventing me from getting ma inspection sticker and mechanic says nothing is wrong but to replace the solenoid will cost $3000.00 any other solution 2001 olds aurora

If your 2007 Impala is stuck in park and the gear override silver button doesn't work, there may be a few potential problems that are causing the problem. Here are some common causes and troubleshooting solutions you can try: Brake light switch: The most common cause of this problem is a faulty brake light switch. The brake light switch is responsible for sending a signal to the shift interlock solenoid to release the shifter when the brake pedal is depressed and can prevent the shifter from releasing if the switch does not operate properly. Make sure your brake lights work by pressing on the brake pedal. If they don't work, it's probably a brake light switch issue that needs to be replaced. Shift Interlock Solenoid: The shift interlock solenoid is a mechanism that prevents the shifter from moving without pressing the brake pedal If the solenoid is faulty or a blown fuse can cause the shifter to go into park. Check the fuse connected to the shift interlock system and replace if necessary. If the fuse is good, the solenoid may need to be replaced. Shift Cable: The shift cable connects the shifter to the transmission and allows you to change gears. Damaged, loose, or misaligned cables can prevent the shifter from leaving the parking space. Inspect the shift cable for any obvious issues and make sure it is securely attached to the shifter and transmission. Shift lock control module: Some vehicles have a shift lock control module that ensures proper operation of the shift interlock system. Malfunction of this module can cause the problem. It may be necessary to use a diagnostic scan tool to check for any error codes associated with the module. Ignition switch: Faulty ignition under certain conditions

they use whats called a leak detection pump they go bad a lot

Those solenoids are supposed to move that valves inside the transmission, they are used to change the gears. If they are mechanically faulty then they are jammed.
This means that the valve assembly has been damaged beyond repair either by a mechanical shock (you hit something and the assembly broke) or you used the wrong transmission oil.
The valve assembly will have to be completely replaced. The transmission will have to be dismantled for that.

Hi there,

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.

Good luck...


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It may be as simple as a short in the wire or a bad TCC solenoid that needs to be replaced. The most would be just under $200.00 with parts and labor with transmission fluid and filter replaced.
If your lucky, you may find where the issue is if it's a wire that is shorting out. Inspect your TCC switch on your brake peddle and it may just need to be readjusted. The other place would be a short to the transmission harness where is connects to the transmission. Once all electrical connections have been inspected, then your going to have to move on to having a transmission shop replace the TCC solenoid replaced.
TCC always locked: TCC apply solenoid circuit shorted to ground, TCC solenoid blockage (easy fix in pan), or TC broken (must remove trans and replace TC).
Thank you for using fixya and most common would be a ground problem, good luck and hope it's will cost you nothing if you find it.

Any shop should be able to get that price for you. Service the trans and filter while its apart. Est $200.00

You cannot replace this part without pulling the tranny. The circuit is inside the tranny.
I recommend just unplugging it. All that this does is help vehicle shift smoother

Unfortunately, there isn't! AIrbag systems are nothing for the home mechanic to play with. They can be dangerous to work on and it's unsafe to just let a problem with them go.

It usually takes more than one drive cycle to clear all monitors to "ready".The vehicle may take multiple "from cold" drive cycles and hundreds of miles to clear all.Drive normally with varied driving and include long coasting down stops.Buy a cheap scan tool ($35) and check monitors as you drive.
DO NOT CLEAR CODES or run the battery dead or you will have to start over!