Error Code P0803: What It Means & What To Do?
OBD Code P0803 - 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction
When does the skip ship solenoid malfunction? How does the P0803
error occur? If the skip shifts solenoid malfunctions, then the P0803 error
code appears. This error is mostly found in manual vehicle as it can prevent
from shifting to 2nd and 3rd gear. Enhancing fuel economy and protecting the
engine by removing the high RPM’s to shift from 1st to 4th gear is the main
function of the skip shift solenoid. If there is voltage or resistance outside
the skip shift solenoid detected by PCM, then the error code will be stored.
Learn More About OBD Error Code P0803
Vehicles which have automatic transmission will help the driver to
select the preferred gear as they drive, which is known as TAP shifting. You
will find a +ahd- button in the shifter which shifts side by side as you drive.
If the switch malfunctions, then the P0803 error code will be stored.
What causes
this problem with the 1-4 Upshift (Skip Shift) Solenoid Control Circuit
Malfunction?
- The skip shift solenoid is faulty.
- Wires or connectors of the skip shift solenoid has opening or
shorted circuit.
- Controller experiences programming error.
Replace/Repair These Parts To Fix OBD Code P0803
- Skip Shift Solenoid - This component
has to function properly to avoid P0803 error code. If it’s defective, replace
them as desired.
- Skip Shift Solenoid Fuse - Is the fuse
of the skip shift solenoid broken or damaged? Don’t worry as you can get them
from Parts Avatar as best prices.
- Skip Shift Solenoid Relay - If you want
to avoid the P0803 error code, then the defective skip shift solenoid relay
must be replaced.
- Skip Shift Solenoid Connector - Check
the terminals of the connector, if they are damaged or broken. If they are
found to be defective, change them as soon as possible.
- Multimeter - Are
you on the lookout for the right replacement for multimeter? Grab them from
Parts Avatar at affordable cost.
- Powertrain Control Module
- A faulty PCM is common error code in most vehicles. Replace the faulty
component to avoid system malfunction.
Symptoms of OBD Error Code P0803
It is vital to know the symptoms of an issue as only then you would be able
to solve the problem. So that’s why we have listed out some major symptoms of
OBD Code P0803 here:
Common Symptoms
- Fully or moderately disabled skip shift.
- Blinking or illumination of the skip shift indicator lamp.
- You will find the transmission placed in limp mode.
How To Correct P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction
Here are some ways with the help of which you will be able to correct the
OBD Code P0803. Your technician will follow a series of procedures in order to
repair this faulty system. Depending upon the component that is defective, one
or more of the following may be performed:
- Replacing the wires.
- The faulty skip shift solenoid has to be replaced.
- Substituting the relay or actuator of solenoid.
- Changing the connector of solenoid at the PCM.
- Retesting the error codes by clearing them, and retesting to see if the issue is solved.
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Easy Diagnosis Of Engine Error OBD Code P0803
Here are some steps which you should follow in order to diagnose this fault
code:
- You can begin this diagnosis by checking if the transmission fluid is clean
and filled up to the correct level. If the fluid is less, check the area of
leak and repair them. Refill with clean fluid and proceed further.
- If the fluid has burnt smell and is extremely dark, it should be changed.
This can be performed by either clearing or flushing the transmission and
changing the filter. As you remove the transmission from the pan take care to
clearly remove the rubbles that have landed. If you pan is clear, then it means
the clutches are mechanically intact. You will have to rebuild the transmission
if you find adequate friction in the pan by the technician.
- To carefully diagnose, you will need a DVOM and a vehicle source of
information. This can help to locate the technical service bulletin that
matches your vehicle based on the year, make, model, size of engine and other
error codes. The first step of diagnosis will be filling the transmission with
the clean fluid at the right level.
- Connect a scanner and recover the freeze frame data and other codes. It’s
always best to note them down as it can help for further diagnosis. Test drive
your vehicle and see if power control module enters readiness modes or the code
is reset. PCM entering readiness mode means, irregular connection which is hard
to diagnose where you have to make the conditions worse before proceeding
further.
- If the later happens, that is if code is reset, you have to diagnose to
search the source of information of your vehicle, diagnostic flow-charts, connector
pinout charts, connector face views, and other procedures.
- The skip shift solenoid must be tested with DVOM for voltage and ground
circuit. If both are found, test the component itself with DVOM.
- If the skip shift solenoid is proper, test the system circuits with DVOM.
In this scenario, the voltage drop testing method works well. Separate all
connectors to test resistance with DVOM.
Common Mistakes When Diagnosing the
P0803 Code
At times it may be difficult to diagnose this error as the vehicle won’t
store the error codes until it takes place multiple times. Also, the check
engine light won’t be activated always when the solenoid