2006 Mazda 5 Engine and AT light ON

[Gunzy]

Hi All,

 

Like to seek advise from bros/sis here, the Engine and AT light turned on earlier this year (Jan) and I cleared it using torque.

It happened once in a while then, so I visited a workshop and they recommended changing the AT oil and monitor which I did.

(car mounted kerb few weeks before, so not sure if it can cause this although we didn't see any physical damage undercarriage)

Btw the gearbox was replaced with a recon unit when I extended the COE in end 16.

 

It seemed ok until recently (start of this month), both lights will turn on whenever I move off from the carpark at the start of the day.

The gear shifting is a little jerky from 1 to 2 and from 2 to 3 and then stucked at gear 3 where the lights will turn on.

I will then clear the error and continue driving (sometimes it happened another 2-3 times) and once it managed to hit gear 4, then everything will be fine.

I noticed this happens when the car is parked for quite some time(I seldom drive the car).If I had been driving around for the day, then the chances of  the lights coming up is very low.

The error code is P0715 which points Input/Turbine Speed Sensor Circuit.

As the error became consistent, I sent it to two workshops to check 2 days ago and both told me that chances is the ECU and the worst case is the gear box. But after googling around, some say is the TCM which sound more logical.

 

Thus, I would like to seek opinions from experts here whether it is more of an electrical or mechanical fault and if there are any good workshops to recommend. (these 2 workshops say it's not the speed sensor which the error code indicated though)

 

Thanks!

 

 

[Watwheels]

Who did you go to so far? General workshop or workshop that only do gearbox?

 

For workshops who do gearbox they should have the necessary tools to diagnose. Your issue seems to be failure to shift(gear) which triggered the warning light. This kinda thing need experienced mechanic to tell you the issue.

[Mkl22]

Hi All,

 

Like to seek advise from bros/sis here, the Engine and AT light turned on earlier this year (Jan) and I cleared it using torque.

It happened once in a while then, so I visited a workshop and they recommended changing the AT oil and monitor which I did.

(car mounted kerb few weeks before, so not sure if it can cause this although we didn't see any physical damage undercarriage)

Btw the gearbox was replaced with a recon unit when I extended the COE in end 16.

 

It seemed ok until recently (start of this month), both lights will turn on whenever I move off from the carpark at the start of the day.

The gear shifting is a little jerky from 1 to 2 and from 2 to 3 and then stucked at gear 3 where the lights will turn on.

I will then clear the error and continue driving (sometimes it happened another 2-3 times) and once it managed to hit gear 4, then everything will be fine.

I noticed this happens when the car is parked for quite some time(I seldom drive the car).If I had been driving around for the day, then the chances of  the lights coming up is very low.

The error code is P0715 which points Input/Turbine Speed Sensor Circuit.

As the error became consistent, I sent it to two workshops to check 2 days ago and both told me that chances is the ECU and the worst case is the gear box. But after googling around, some say is the TCM which sound more logical.

 

Thus, I would like to seek opinions from experts here whether it is more of an electrical or mechanical fault and if there are any good workshops to recommend. (these 2 workshops say it's not the speed sensor which the error code indicated though)

 

Thanks!

 

 

sounds very much like this.

 

http://www.torontomazda3.ca/forum/showthread.php?53333-DIY-Mazda-3-%282-3-GT%29-Turbine-Input-Speed-Sensor-Replacement

 

 

[Frankloh]

I encounter the same speed sensor fault as yours when I download fault using Torque Apps.

Send to workshop and was told is my Gearbox Valve Body faulty.

 

[Gunzy]

Who did you go to so far? General workshop or workshop that only do gearbox?

 

For workshops who do gearbox they should have the necessary tools to diagnose. Your issue seems to be failure to shift(gear) which triggered the warning light. This kinda thing need experienced mechanic to tell you the issue.

 

General workshop bro, do you have any good gearbox workshop to recommend? Don't wanna get conned...

sounds very much like this.

 

http://www.torontomazda3.ca/forum/showthread.php?53333-DIY-Mazda-3-%282-3-GT%29-Turbine-Input-Speed-Sensor-Replacement

 

 

 

Yep, came across this as well that's why dunno to believe the mechanics saying to try replacing the ECU instead....

I am more convinced with the speed sensor and TCM replacement rather than the ECU

I encounter the same speed sensor fault as yours when I download fault using Torque Apps.

Send to workshop and was told is my Gearbox Valve Body faulty.

 

So did the workshop solve your issue bro?

If yes what is the damage and where is the workshop located?