P1757 Front Brake Solenoid Circuit (Nissan)

By Bojan Popic (Contact Me)
Last Updated 2023-10-03
Master Mechanical Engineer
CodeFault LocationProbable Cause
P1757 P1757 Front Brake Solenoid Circuit (Nissan)
(Buy Part On Amazon)

We recommend Torque Pro

Manufacturer Specific Definitions for P1757

MakeFault Location
ChryslerGovernor Press. Not at Target at 15-20 PSI Conditions
Daewoo2 Shift Pos. Indic. Lamp
DodgeGovernor pressure not equal to target -low pressure malfunction
HyundaiLamp ‘2’
InfinitiAT- front brake- solenoid valve malfunction
JeepGovemor pressure not equal to target (15-20 PSI) -zero pressure malfunction
Land RoverTransmission fluid pressure (TFP), 4th gear- maximum control limit reached
MazdaAT- shift solenoid 2- short circuit
NissanAutomatic transmission front brake – solenoid valve malfunction
RamGovernor pressure not equal to target -low pressure malfunction

Table of Contents

  1. What Does Code P1757 Mean?
  2. Where is the P1757 sensor located?
  3. What are the common causes of code P1757?
  4. Get Help with P1757

What Does Code P1757 Mean?

OBD II fault code P1757 is a manufacturer-specific code defined by Nissan, as well as some other makers, as Front Brake Solenoid Circuit. This code is set when the PCM or TCU, depending on what the car has, detects an electrical problem with a solenoid that operates the front band brake.

All conventional, torque-converter automatic transmissions have several band brakes, which control the planetary gearset movement. Their job is to briefly block the gearsets and stop them from rotating, allowing a smooth gear change. This brake is, in essence, a steel belt that wraps around the control clutch and engages it when needed.

The said brakes – both front and rear – are operated hydraulically by solenoids controlled by a PCM or TCU. When the gear change needs to be performed, the solenoid activates the brake, which grips around the clutch and stops the planetary gear set. And once the gearshift is done, the solenoid relieves the pressure from the front brake band.

Be aware other carmakers also may use this code, with different definitions between different makes. This guide applies primarily to Nissan vehicles but may also work for some Infiniti, as these cars use the same architecture.

Where is the P1757 sensor located?

The front brake solenoid is integrated into the solenoid body, which is located inside the automatic transmission. And because the P1757 trouble code is very specific to Nissan cars and trucks with a Jatco RE5R05A 5-speed transmission, we’re going to focus on it.

Here, to gain access to the valve body, you’ll have to drain the transmission fluid and then remove the pan and the filter. Once that’s out of the way, the valve body can be removed, which will give access to the solenoids on its upper side. The front brake’s solenoid location is shown in the photo below.

The vehicles that use the said RE5R05A 5-speed transmission include the Nissan 350Z, 1st generation Armada, D40 Navara, Titan, and Xterra, as well as Infiniti G35 and FX35.

What are the common causes of code P1757?

The P1757 is, by definition, an electric-circuit-related trouble code, which largely determines possible causes. Apart from the usual – damaged wiring or loose connectors – the problem can be with the solenoid itself, whose electromagnetic core might be shortened or open.

But when dealing with a P1757 code in a vehicle with a 5-speed RE5R05A Jatco transmission, the cause for this issue is a pin connecting the brake solenoid to the TCM, which breaks apart, as shown in the following photo.

When this metal pin snaps, it causes a sporadic or constant loss of communication between the solenoid and TCM. The most common repair procedure involves the following steps:

  • removing the control board – in which the TCM and affected pins are located – from the valve body
  • opening the control board housing (be careful, as the plastic may be brittle)
  • check the pins for any cracks, especially on the spot where it bends 90 degrees upwards
  • if the pin is broken, solder it using an extra piece of wire as a reinforcement
  • test the conductivity with a multimeter and, if OK, refit everything in reverse order

This video, taken by Automatic Transmission, explains the whole process in detail. Should all this seem too demanding, you can try sourcing a remanufactured valve body, which should have been checked for this and other known defects.

Help Us Help You

Please comment below describing your issue as well as the specifics of your vehicle (make, model, year, miles, and engine). To get a detailed, expedited response from a mechanic, please make a $9.99 donation via the payment button below.