Error Code P2801: What It Means & What To Do?

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The trouble code P2801 can be explained as Transmission Range Sensor "B" Circuit Range/Performance. The specific repair steps can vary as it depends upon the vehicle make and model. The transmission range sensor is also known as the PRNDL input or neutral safety switch. It would tell the transmission control module and the engine control module that the transmission is in park, reverse, neutral, drive, low, 2nd, 3rd etc. It is directly connected to the manual valve of transmission, so when the shift lever is moved from park to drive, then the Transmission Range Sensor would transfer this critical information to the above-mentioned vehicle control module systems. Now when the input from the transmission range sensor would be inconsistent or unreasonable, then the powertrain control module would set the P2801 fault code. The engine control module, powertrain control module or the transmission control module monitors this circuit depending upon the particular automobile.

If the engine control module would detect a variation in the voltage coming from the transmission range sensor "B" circuit that is outside the parameters set by the automobile manufacturer, then it would store the P2801 error code. This would also give rise to the illumination of the check engine light.

What causes this problem with the Transmission Range Sensor "B" Circuit Range/Performance?

• Some issues related to the transmission range sensor "B"
• The transmission range sensor "B" might be adjusted properly
• Unlocked transmission range sensor harness
• Unusable PCM

1. Engine Control Module - If there is any corrosion or breaks in the internal wiring of the harness, then it can cause a short in the ECM or can also cause corrosion in the ECM through the wiring harness. You can always rely on us as we have the best auto parts for our customers.
2. Transmission Fluid Pump Harness - Faulty pump harness can affect the performance directly and can cause erratic pump behaviour with harsh shifts. Thus, replace faulty harness now!
3. Manual Transmission Shifter - Many a times the manual transmission shifter fails due to stretching. It is very common with automobiles which have manual transmissions as the driver moves the shifter more frequently. Buy top notch manual transmission shifter from us at economical prices.
4. Automatic Transmission Module - Sometimes the transmission module is unable to communicate or correctly anticipate the speed of the vehicle and thus creates difficulty in gear shift leading to sluggish acceleration, throttle response and stalling. Thus, can also hamper a lot of components physically and thus must be checked and replaced, if required.
5. Powertrain Control Module - The onboard computer, or powertrain control module is the brain of the engine control system. Now if the brain is not working properly, then neither is the car engine. Get it replaced before the situation gets worse.
6. Car Battery - If the battery is not functioning properly, they may overheat and underperform. Also, it may have difficulty in charging and might discharge fast. Thus, replacements are in order. Buy a new battery now!
7. Electronic Control Unit - Is your car jump starting on reverse polarity? Or are you facing some intermittent starting issues? If yes, then it indicates that your electronic control unit is bad. So, it is very important to replace the defective electronic control unit with us at equitable prices.
8. Diagnostic Tools - Buy quality diagnostic tools to check and diagnose OBD code P2801 error with the help of experienced mechanic. Visit us today! 

There could be countless symptoms that would accompany this fault code. Willing to know some common symptoms of OBD Trouble Code P2801? Your wish is our demand. Have a look at them below:

Common Symptoms

• Check engine light might come into signal
• Transmission shifting issues
• The overall fuel consumption might rise

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:

• Repair or replace the quirky transmission range sensor "B"
• Rehabilitate the defaults in the powertrain control module
• Recondition the non-functioning transmission range sensor harness

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of pcm, ecm, gear shifter, transmission control module, transmission range sensor, ecm car, pcm car, transmission gear, ecm module, pcm module, transmission speed sensor, automatic transmission gears and a lot more. We are sure that now all your issues would be resolved.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2801 code to be stored:

A certain sign of this is smoke or steam being discharged from under the car hood. The ignition timing could be set incorrectly and there would be a need to adjust it. Now when you are searching under the car hood, you might notice that the drive belts appear loose, then you must tighten them properly or else they can always be replaced. If you find out that there is a visible pool of fluid underneath the car, then it might indicate a failure in the cylinder head gasket. It would be confirmed in the form of billowing smoke being blown from the exhaust system. Just keep one thing in mind that the parts and components should not be restored with reference to only a P2801 trouble code. You can always consult the vehicle service manual for more on possible causes of the error, along with required testing.

Common Mistakes When Diagnosing The P2801 Code

• Malfunctioning powertrain control module
• Flaws in the transmission range sensor
• There can be a failure in the transmission control module
• Wiring problems