P2798 - OBD Trouble Code
OBD Code P2798 - Auxiliary Transmission Fluid Pump Control Circuit Low
The trouble code P2798 can be
described as Auxiliary Transmission Fluid Pump Control Circuit Low. The error
code P2798 would start triggering when the PCM would detect some fault in
auxiliary transmission fluid pump control circuit. One thing which you must
keep in mind that its symptoms as well as causes would surely vary as it
depends upon a number of things.
Learn More About OBD Error Code P2798
The P2798 trouble code would
indicate that an auxiliary
transmission fluid pump control circuit which is not as per the predetermined
limit has been detected by the ECM. Now when this would occur, the fault code
would be stored and there would be an illumination of the malfunction indicator light.
What causes this problem with the Auxiliary
Transmission Fluid Pump Control Circuit Low?
- Defaults in the electronic
transmission fluid auxiliary pump
- Electronic transmission fluid
auxiliary pump harness might be opened or shorted
- Some issues related to the drive
motor generator power inverter control module failure
- Unusable transmission fluid pump
control relay
Replace/Repair These Parts To Fix OBD Code P2798
- Engine Control Module - Is your car engine light still
staying ON after resetting or your car engine is turning off for no reason?
Then these are some common symptoms indicating that your car engine control
module is defective.
- Powertrain Control Module - The PCM works as the central
computer system in an automobile’s mechanism. This auto part is in
charge of all the constituents as well as the functions performed by them.
Having such enormous importance in the operation of all the parts means that any
defect in it will affect almost every aspect of a car.
- Transmission Fluid Pump
Harness - The fluid pump harness can also be faulty causing transmission to
underperform due to transmission slipping and harsh shift. Thus, check for
harness faults and replace it now!
- Automatic Transmission Module - Faulty
transmission module can cause problematic down shifts and upshifts, leading to
stalling while accelerating or slowing down. This can also hamper many
transmission system parts. Thus, replace it now!
- Electronic Control Unit - The ECU is a
major component of your car's onboard computer. It's used to regulate many
systems and subsystems in your car's engine, drive train and other major
components. Visit us to buy best quality ECU online.
- Transmission Fluid Pump - The first
indication of any transmission related problem will the illumination Check
Engine Light. Other major symptoms indicating bad transmission fluid pump can
be bad shifts, delayed response and fuel burning smell
coming from under the hood. Thus, immediate
replacement is advisable.
- Diagnostic Tools - Take the help of a professional mechanic to
diagnose OBD code error. Use high grade diagnostic tools to resolve this issue.
Buy new tools and equipment form us!
Symptoms Of OBD Error Code P2798
Our main motive is to achieve
customer satisfaction and that’s why we will help you to diagnose P2798 code by
mentioning some major symptoms below:
Common Symptoms
- Illumination in the service engine soon light
- A lot of transmission heat
- Diminished shifting
efficiency
How To Correct P2798 Auxiliary Transmission Fluid Pump Control Circuit Low
If you wish to correct this fault
code, then you have to follow certain steps. Correcting a problem needs your
careful attention. Here are some ways with the help of which you will be able
to correct the OBD Code P2798:
- Repair or replace the quirky electronic transmission fluid auxiliary pump
- You must fix the defective drive motor generator
power inverter control module
- It is essential to restore the flawed
transmission fluid pump control relay
- Recondition the non-functioning electronic
transmission fluid auxiliary pump harness
- It is necessary to perform proper service of the unsound powertrain control module
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Easy Diagnosis Of Engine Error OBD Code P2798
Here are some steps which you should
follow in order to diagnose this fault code:
- There are some models which use an
electronic auxiliary transmission fluid pump to help regulate transmission
fluid pressure by raising the flow of fluid throughout the transmission,
transmission cooler, and torque converter.
- There is an electronic controller
which controls the pump by utilizing the system of wiring and relays. The
powertrain control module would then utilize the input data from various
transmission sensors to decide when the auxiliary transmission fluid pump must
be turned on and turned off.
- CAN stands for “controller area
network.” The CAN represents a communication bus that would allow a number of
microcontrollers to communicate with one another without the need for a host
computer.
- It is a message-based protocol
initially designed for automotive use. The network of CAN bus is actually a
complex conglomeration of wiring harnesses and connectors used as a pipeline of
information which is shared between two or more automotive control modules.
Every electrical function of the vehicle is virtually controlled by these
controllers, with the powertrain control module being the primary controller.
- Control modules receive input data
from various sensors and emit output signals to system constituents and other
control modules. If this proves to be a CAN bus associated situation, then it
could prove very challenging to diagnose by an amateur technician. Unlike other
diagnostic codes, this type of code can sometimes be best left to a
professional simply because of the bulk of circuitry involved.
- A technician which is experienced
should use a specialized scanner (Autohex or Tech II) to determine the general
area of the malfunction much more rapidly and easily than someone using a code
reader as well as a digital volt ohmmeter. If you will disconnect and check
every single pin of the CAN bus then it can consume a lot of time as well as
money.
- Also make sure to install some type
of memory saving device, test the PCM and other controllers lose their memory
and sometimes they might require reprogramming. A specialized diagnostic CAN
scanner will depict pin values and control module operation without risking a
meltdown. It can diagnose computer and issues related to circuitry correctly by
monitoring automobile operation while the vehicle is being operated. If you
want to diagnose this type of code using a digital volt ohmmeter, then it would
entail probing thousands of circuits separately.
- One probe which is misplaced could destroy
expensive control modules and require that the vehicle be totally reprogrammed.
At the most, you may attempt to perform a continuity test after all control
modules are disconnected, and this could literally require 40-hours or more,
based upon the automobile.
- There are some applications are
equipped with up to 18 separate control modules. If you choose to tackle this
monumental task, then you must start with a careful visual inspection of all
system circuitry, connectors, and fuses. Control module ground circuits should
be inspected for continuity with battery ground. Generally, the faulty system
grounds are reason behind the occurrence of these types of codes. An auxiliary
ground cable can be supportive in diagnosing system ground discrepancies.
- Engine and transmission ground
cables, straps, and wires are sometimes left dangling once the repairs have
been made. Search for loose or corroded electrical connectors that might rise
the circuit resistance and cause these types of codes to be stored. Obtain a
CAN bus system wiring diagram and/or pin out value chart, then use the digital
volt ohmmeter to test continuity between individual controller connectors. You
must compare your findings with the manufacturer’s referenced values and repair
open or shorted circuits as per the need. It is more economical to restore the
faulty wiring rather than attempting to remove it from the complex web of
wiring harnesses.
Common Mistakes When Diagnosing The P2798 Code
- There can be a failure in the
auxiliary transmission pump
- Defaults in the drive motor
generator power inverter control module
- Some issues related to the wiring