Question about 2000 Nissan Maxima

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Hi my 2000 maxima shows the code P0740 TCC solonoid Circuit Open problem and that was from the OTC scanner...

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  • ivanvorobiev Oct 07, 2009

    yes thank you that made sence.

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P0740 Torque Converter Clutch Circuit Malfunction, ok what does this mean? in many cases this code can be a result of a sticking converter solenoid due to worn out transmission fluid, the trans fluid and filter must be changed every 60,000 miles, if that has not been done have the service done and clear the code, if it comes back the next step is to replace the TCC (torque converter clutch) solenoid inside the trans, it is attached to the valve body of the transmission, u have to pull the pan off to change it, when u have the trans service done u might as well replace that solenoid and inspect the wiring to it, this is a dealer part, once u have the new solenoid u can quickly ID the part inside the trans, If you don't want to do this really messy job just have the shop doing the transmission service do the solenoid replacement. Keep your fingers crossed that this clears the problem, if i t comes back it means removing the transmission and replacing the transmissions torque converter for a shorted magnetic clutch and replacing the solenoid again..

Posted on Oct 07, 2009

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I have 2001 ford mustang code P0740 and P0743


This indicates a faulty Transmission Torque Converter Clutch (TCC) circuit (0740) or TCC solenoid (0743)

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P0740 Torque Converter Clutch Circuit Malfunction Driving the vehicle with this problem and not attending to it asap may cause further damage. When you feel a problem and or see the engine light on, use your head wisely and have a reputable transmission shop go through a complete diagnostic procedure, in most cases this is a fluid problem, but since you serviced the trans that can be ruled out, if you haven't changed the TCC solenoid yet do so, I was unclear about what you replaced, I assume the shift solenoid's, if you have replaced the TCC solenoid then the problem is either in the wiring to the trans or inside the trans in the torque converter clutch circuit or the torque converter itself, which is a all to common failure in these Vans, if the TCC is ok replace the torque converter, that of course requires removing the trans, this job will require a lift, it is just about impossible on the ground.

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Po7400


for P0740 it is:
OBD-2 P0740 - Torque Converter Clutch Circuit/Open
OBD 2 net 24048029-pmx1u32kwnqlluv3tiqttm5t-1-0.jpg TCC malfunciton P0740 OBD II Code

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P0740


Error Code: P0740
Description:
Torque Converter Clutch (TCC) Solenoid - Circuit Malfunction
Possible Cause:
Wiring.
Torque converter clutch (TCC) solenoid.
Engine control module (ECM)/Powertrain control module (PCM)/Transmission control module (TCM).

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My 2001 nissan sentra se 2.0 idles up and down and i have a era code P0740


Trouble Code: P0740

A/T TCC Solenoid Circuit Malfunction

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TCC solenoid control circuit open or shorted to groundTCC solenoid control circuit shorted to system power (B+)TCC solenoid is damaged or has failedPCM has failed

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Got this code p0740, tcc circuit malfunction, I would like to replace a TCC Solenoid how do i go about it?


P0740 - Torque Converter Clutch Circuit Open

Possible Causes:
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- Dirty transmission fluid
- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness or connectors
- Torque converter clutch solenoid valve circuit is open or shorted

Check your fluids 1st if they are low add fluid, and if they are dirty do a flush and a new filter. This usually will take care of it and save you money. TCCSV is a bit pricey try the cheaper route first. But it is located inside the transmission or on the side of the transmission. I dont recall exactly. Its something I would let a shop do though unless you have high mechanical skills.

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not a solenoid,or tps

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