2008.5 Mazda3 GT - Automatic Transaxle (AT) and CEL Issues

[j03]

Hi,

This past Sunday my 2008.5 Mazda3 GT's AT and CEL lights came on randomly..

Two weeks ago I took it into my local mechanic to get an oil change, they recommended and flushed the transmission fluid. This past Sunday as I was out driving I felt a jerking motion. The transmission went down to 3rd from 5th gear and the AT and CEL came on. I've done a little research and it seems like the transmission went into safe mode to preserve itself..

Checked the transmission fluid level and it was a little low so I topped it up. Didn't have the correct ATF M-V because apparently the dealer only sells that..

Plugged in the twice paid for code reader and it says P0753 is the error. A quick google found me this:
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shift solenoid 'A' valve
- Shift solenoid 'A' valve harness or connectors
- Shift solenoid 'A' valve circuit is open or shorted

I clear the errors so I can get to work, but not doing any other driving...

Can cross off the first two issues. I don't see any leaking since I topped it up on Sunday. After I got the car back two weeks ago it wreaked of BO. I have since come to realize that's what transmission fluid smells like.. yuck.

Have an appointment with at a local Mazda dealership tomorrow, mechanic is located in Mississauga and I live and work in Hamilton.. Just wondering if anyone had any thoughts on what might be causing this? Did my mechanic botch the transmission flush?

Thanks, Joe

[zeddyz]

It started occuring after the transmission fluid change and the code reader reinforces it as well, meaning that could just be it. I've had my AT not shift to 4th gear and would only work at 1st, 2nd and 3rd gear. The issue was an easy fix with the OB2D code reader. The issue occurred another time but cleared it again with the reader and it hasn't come back again. I would suggest holding off the dealership for a couple of days to see if it happens again because the dealer is going to find the smallest thing and try to stick it to you

[Stills]

Hi,

This past Sunday my 2008.5 Mazda3 GT's AT and CEL lights came on randomly..

Two weeks ago I took it into my local mechanic to get an oil change, they recommended and flushed the transmission fluid. This past Sunday as I was out driving I felt a jerking motion. The transmission went down to 3rd from 5th gear and the AT and CEL came on. I've done a little research and it seems like the transmission went into safe mode to preserve itself..

Checked the transmission fluid level and it was a little low so I topped it up. Didn't have the correct ATF M-V because apparently the dealer only sells that..

Plugged in the twice paid for code reader and it says P0753 is the error. A quick google found me this:
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shift solenoid 'A' valve
- Shift solenoid 'A' valve harness or connectors
- Shift solenoid 'A' valve circuit is open or shorted

I clear the errors so I can get to work, but not doing any other driving...

Can cross off the first two issues. I don't see any leaking since I topped it up on Sunday. After I got the car back two weeks ago it wreaked of BO. I have since come to realize that's what transmission fluid smells like.. yuck.

Have an appointment with at a local Mazda dealership tomorrow, mechanic is located in Mississauga and I live and work in Hamilton.. Just wondering if anyone had any thoughts on what might be causing this? Did my mechanic botch the transmission flush?

Thanks, Joe

Did you get this resolved?

[ssolidd]

You dont need the code reader to change the AT fluid once you noticed that the color is dark(by checking the dip stick) change it right away mine is always cherry red :).

[Mukinfutch]

Same issue here. I get code P0753 totally randomly, car goes into limp mode. If I turn the car off then on it clears and runs fine until it decides to do it again. Very frustrating......