P1772 replaced valve body problem not resolved

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727G35
Posts: 24
Joined: Mon May 20, 2019 6:38 pm
Car: 03 5at g35 sedan

P1772 replaced valve body problem not resolved

Postby 727G35 » Fri Jan 17, 2020 8:36 pm

I have a 1772 code, I replaced the valve body and the code stayed and the problem is just different.
Before it was like it was always in 3rd or 4th gear accelerating very slowly.
After the fix it accelerates faster.. sometimes, its sparratic to say the least. Even though now it accelerates it doesn't seem like its actually engaging into the gears. All advice is appreciated.. thank you!


727G35
Posts: 24
Joined: Mon May 20, 2019 6:38 pm
Car: 03 5at g35 sedan

Re: P1772 replaced valve body problem not resolved

Postby 727G35 » Sun Jan 19, 2020 11:25 pm

So I reset the battery overnight.
I got a c1109 and c1130. I started the car the check engine light was off. It seems like it wont go into first gear but all other gears are working correct now.
Around the block CEL light on back to p1772!
What is going on??

727G35
Posts: 24
Joined: Mon May 20, 2019 6:38 pm
Car: 03 5at g35 sedan

Re: P1772 replaced valve body problem not resolved

Postby 727G35 » Sun Jan 19, 2020 11:58 pm

The codes show these are the causes
From 1109

Faulty Anti-Lock Brake System
(ABS) Module Actuator (Electrical / Control Unit)
ABS Module harness is open or shorted ABS Module circuit poor electrical connection Blown ABS Module fuse Low battery voltage
And
From 1130
Faulty Engine Control Module (ECM)
Faulty ABS actuator and electric unit (control unit)
Control Area Network (CAN) communication line
Blown ECM fuses.
After unplugging the Battery it fixed a bit, but the original code came back.
What's happeninh??

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audtatious
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Re: P1772 replaced valve body problem not resolved

Postby audtatious » Wed Feb 05, 2020 3:43 pm

P1772 is still complaining about the low coast brake solenoid as I stated in the other thread. The C* codes seem to be wiring and ground issues....which could be causing the P1772.

Follow the FSM on the P1772 issue as it walks through testing the component


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