Guide To P278B OBD Error Code Solutions

<<See All OBD Codes

The trouble code P278B can be elucidated as Kick Down Switch Circuit Range/Performance. It is the kick down switch which would tell the transmission when to downshift the transmission so that the automobile is able to accelerate faster. If an improper switch is sent by the kickdown switch to the transmission control module (TCM), then this error code would start flashing.

This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another. The kick down switch circuit is being monitored by the transmission control module. This trouble code would be set by the transmission control module when the kick down switch circuit would not be as per the specifications set by the manufacturer.

What causes this problem with the Kick Down Switch Circuit Range/Performance?

• Malfunctioning kick down switch
• Kick down switch harness might be unlocked
• Kick down switch circuit might have bad electrical connection

1. Engine Control Module - Dead cells in batteries can cause a failure in the engine control module. Many times a battery is left in the rig long after a cell has died. This would affect the grounding in the car battery.
2. Kick Down Switch - The main role of this auto part is to shift up into higher gears as the vehicle accelerates. So if there are some faults in your kick down switch, so you get it replaced. We offer top notch kick down switch at affordable prices.
3. Transmission Control Module - The TCM monitors the functioning of the transmission system and will store this OBD code if the fluid pump does not function properly. Contrary, the TCM can also be faulty and might need reprogramming and replacement. Thus, replace it now!
4. Powertrain Control Module - If there are some faults in the PCM, then it may throw off the timing and fuel settings of the engine, which can negatively affect the performance. A flawed PCM may cause the vehicle to experience a reduction in fuel efficiency, power as well as acceleration.
5. Electronic Control Unit - Do you know that the poor performance or unexplained drops in fuel economy or efficiency are often associated to onboard car computer problems, or defective ECU issues?
6. Diagnostic Tools - Use factory grade diagnostic tools to resolve OBD code P278B error. Buy new diagnostic tools and equipment for us.

You might be thinking that how would you diagnose these problems? We at Parts Avatar Canada would help you diagnose the major symptoms easily.

Common Symptoms

• Visibility in the check engine light
• The overall performance of the engine might start declining

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• Rehabilitate the defaults in the ECM/PCM
• Carefully adjust the faults in the kick down switch
• Recondition the non-functioning kick down switch harness
• It is necessary to perform proper service of the unsound kick down switch circuit

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of kick down switch, transmission control module, engine control module, ECM, powertrain control module, PCM, TCM, switch valve, pcm car, ecm car, ecm module, pcm module and many more. Now all your problems would vanish within no time.

Here are some steps which you should follow in order to diagnose this fault code:

After verifying the P278B code with an OBD-II scanner, the mechanic should begin with a visual inspection of all electrical components, especially looking for some issues in the kick down switch. Any issues should be repaired, and the code should be cleared from the system. If the code reappears after a retest, the mechanic should then move on to performing voltage tests and resistance tests on the sensor, and comparing the information to the manufacturer’s specifications. If the readings are within the correct limits, then the sensor needs to be replaced. However, if the readings are not within the correct limits, then the issue lies elsewhere. The mechanic should continue checking each possible cause, clearing the code and retesting the system after each attempt, to be sure that the correct solution is found.

Common Mistakes When Diagnosing The P278B Code

• Transmission control module might start failing
• Some issues related to the kick down switch
• Issues with the car wiring