P0754 - OBD Trouble Code
OBD Code P0754 - Shift Solenoid A Intermittent
P0754 is the OBD-II generic code for the vehicles using automatic
transmissions controlled by computers. This trouble code is associated with an
intermittent fault in the transmission Shift Solenoid "A" Circuit. It
means that the powertrain control module (PCM) has detected that there is an
irregularity in shift solenoid A. Other shift solenoid codes may accompany this
code.
Learn More About OBD Error Code P0754
Diagnostic trouble code
P0754 is technically described as Shift Solenoid A Intermittent. Most automatic
transmissions incorporate at least three solenoids that are solenoid A, B and
C. This trouble code is associated with shift solenoid A. When the
transmission solenoid is intermittent, in most cases the problem is not the
electrical part of the solenoid; the problem is foreign material obstructing
the mechanical function of the solenoid or the flow of the fluid through the transmission
valve body. The computer controlled automatic transmission uses shift
solenoids to manage the transfer of fluid between hydraulic circuits and
actuate a change in transmission gear ratio.
The P0754 code is
detected when the gear required by the ECM does not match the actual gear when
vehicle is driven.
What causes this problem
with the Shift Solenoid A Intermittent?
- Filthy transmission
fluid
- Reduced level of
transmission fluid
- Defected shift solenoid
A valve
- Hydraulic blockages
inside the internal transmission fluid passages
- Flawed or corroded
wiring and connector
- Clogged transmission filter
- Faulty PCM
Replace/Repair These Parts To Fix OBD Code P0754
- Shift Solenoid - A shift solenoid is a component of a vehicle's transmission system
regulating the transmission fluid levels in a car. This computerized component
of a car automatically controls the transmission fluid levels, allowing
the right amount of fluid to flow in and out of the transmission. The shift
solenoid is located on the transmission's internal valve body or on the outside
of the transmission case. If you discover it faulty replace it immediately.
- Shift Valves - shift valve directs line pressure to the circuit
selected by the gear selector. It's connected mechanically to the gear selector
by the shift cable. Replace the fallacious shift valves in no time else can
create serious problems.
- Transmission Filter - The transmission filter is there to keep contaminating particles
out of the transmission fluid. However, if the filter fails to keep particles
out, the transmission fluid will quickly reach a point where it is too dirty to
do its job efficiently.
- Transmission Valve
Body - The valve body is the control center of the
automatic transmission. It contains a maze of channels and passages that direct
hydraulic fluid to the numerous valves which then activate the appropriate
clutch pack or band servo to smoothly shift to the appropriate gear for each
driving situation. It should be inspecting thoroughly and replace or repair as
required.
- Powertrain Control
Module - A powertrain control module, abbreviated
PCM, is an automotive component, a control unit, used on motor vehicles. It is
generally a combined control unit, consisting of the engine control unit (ECU)
and the transmission control unit (TCU). Faulty PCM should be repaired or
replaced immediately.
Symptoms Of OBD Error Code P0754
Some common symptoms for
this trouble code P0754 are below mentioned. If you discover any one of them,
kindly take your vehicle to the reputed repair facility.
- Transmission will not
shift gears
- Harsh shifting
- Slippage of transmission
- Overheating of
transmission
- Vehicle may enter into
limp mode
- Fall in fuel efficiency
- Illuminated check engine
light
How To Correct P0754 Shift Solenoid A Intermittent
Trouble code P0754
should be diagnosed and addressed immediately as this can affect the
drivability of your car and if avoided can lead to serious transmission damage.
To fix this code following repairs and replacements may help:
- Change the transmission
fluid and filter.
- Replace or repair a
faulty shift solenoid.
- Replace the flawed
defective transmission valve body.
- Repair or replace the
faulty wiring and connector.
- Repair or replace the
faulty PCM.
All the required components to fix this code are easily available on our web Parts Avatar Canada at best possible prices and that too from various brands. Explore now!
Easy Diagnosis Of Engine Error OBD Code P0754
To avoid any mistakes
while diagnosing this code, it is always recommended to have your vehicle
diagnosed with the help of qualified technician. Steps to diagnose this code
are as follows:
- Record all fault codes
present, as well as all available freeze frame data. This information can be of
use should an intermittent fault be diagnosed later on.
- If the application is
fitted with a dipstick, check the fluid level as per the instructions in the
manual, and adjust the level as required. Also check the condition of the
fluid; if it is dark in color, has a burnt smell, or has a thick, tarry
consistency, the fluid is degraded and it must be replaced.
- If the fluid is up to
the proper mark and in good condition, locate the transmission wiring harness,
and inspect it for damage or corrosion. Also perform a thorough visual
inspection of all related wiring- look for damaged, burnt, shorted,
disconnected, or corroded wiring. Repair or replace wiring or the
connector as required.
- If the connector is in
good condition, refer to the manual to determine the function and color coding
of each wire in the connector. Identify the wires that relate to shift solenoid
“A” in the transmission side of the connector, and perform resistance and
continuity checks on these wires as per the instructions in the manual.
Common Mistakes When
Diagnosing the P0754 Code
Most commonly, mechanics
will replace shift solenoid A without conducting a full diagnosis. While a
failed solenoid is often the culprit, there are other factors that must be
ruled out. Often, low transmission fluid is the problem.