Car still stuck in limp mode

Asked by Michael Apr 09, 2020 at 10:33 PM about the 2009 Nissan Altima

Question type: Maintenance & Repair

Imy transmission went out in my Nissan
Altima 2.5 s so I replaced it with a used
transmission  it car was still in limp mode so I
scanned it and got back 5 fail codes all relating
to my transmission sensors so I replaced that
transmission with another used transmission
from a car that had been wrecked so I figure
the transmission was still good but I'm still
getting the same codes step motor code
,torque converter clutch selonoid code
,pressure a and b control selonoid codes.
Surely not both transmissions I put in my car
have the same fail codes what is most likely
the problematic

6 Answers


Post the actual codes and maybe someone here can help. Unfortunately for you, you have the worst transmission ever made.

P1777,P1777,P1745,P1746,and I can't remember the torque converter clutch selonoid code, but I got all 5 codes on both transmissions I put in so I'm thinking I couldn't have gotten two bad transmissions with the same fail codes


Did you also replace the torque converter? I would also examine the transmission wiring harness for damage.

Yes I replaced torque converter on both transmissions so replacing the wiring harness to my transmission is probably my next move you think


I would inspect it and the connectors for damage. I also wonder about the TCM.

I'll do that and thanks for the advice

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