P255E OBD Error Code: Problem & Solutions

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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.This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

One advantage that clutch shifted PTOs offer over mechanically shifted models is the ability to protect the PTO, as well as other hydraulic system components, from damage caused by excessive operating speeds. Over speed damage shows up as burnt PTO clutch packs, twisted driveshaft, overheated hydraulic systems, failed hoses, and damaged hydraulic cylinders. Over speed protection is accomplished by incorporating an over speed protection device in the system. Thus, if the PTO speed selector sensor or switch is not working properly, OBD code P255E gets stored in the powertrain control module (PCM).

What causes this problem with PTO Speed Selector Sensor/Switch 2 Circuit Intermittent/Erratic?

• Malfunctioned PTO speed selector sensor
• Unusable PTO switch
• Defective Valve Body
• Sensor wiring and connectors distorted
• Dirty transmission fluid that restricts the hydraulic passages

1. Engine Control Module - The solenoid might cause a short in the engine control module because of corrosion in the solenoid or the wire running from the solenoid to the ECM harness.
2. Electronic Control Unit - The ECU power management control module keeps in check the hybrid battery charging functions. If the ECU is faulty, the battery pack will not be able to properly get charged and thus, the ECU might need replacement.
3. Powertrain Control Module - A trouble with the PCM would mean that it is unable to determine the right fuel mixture and would send the car engine either more or less fuel than it requires. Now when the engine gets more, the carbon emission would increase and fuel economy would drop. In case of the opposite, the engine will choke, stutter, and might start stalling sometimes.
4. Diagnostic Tool - Usually any OBD code problem requires deep insight into the problem and high-grade tools in order to fix it properly. Thus, buy quality diagnostic tools form us!
5. Automatic Transmission Control Module - Auto TCM, if faulty will impact the vehicle’s performance directly. Thus, replace or repair it now!
6. PTO Speed Selector Sensor - It is important to understand the torque and shaft speed, as well as the power accuracy. Thus, PTO speed sensor works as an important component and must be replaced, if faulty.

Interested in knowing the symptoms to obd code P255E? If yes, then you have arrived at the right place. We at PartsAvatar have listed out few common symptoms associated with this Defective PTO sensor problem.

Common Symptoms

• The service engine soon light can start lighting up
• Auxiliary PTO component non-operative
• Strange noises from the shaft gears
• OBD code flashing in the system

Once you know the symptoms of your vehicle’s problem, it becomes easy to detect it and get started with solving it. So, next on our list is few common steps to correct this issue with your vehicle.

• If the transmission has suffered damage due to a low fluid condition, first rebuild the transmission, perform a fluid flush, and replace the torque converter
• Check the wiring or connectors and replace any damaged, or faulty, wiring or connectors
• Repair any leaks if the transmission fluid looks like it is in good condition and is only low
• Replace the Transmission Control Module if this component is damaged
• Power Take Off Speed Selector Sensor replacement
• Repair or replace any damaged circuits or connectors to the sensor circuit
• Replace the PCM, if found faulty

If you need parts to fix this issue, you no longer need to search for them. We at PartsAvatar Canada have an extensive range of auto parts in stock from you, ranging from all replacement parts to all interior and exterior parts like PCM, PTO Speed Selector Sensor, PTO Speed Selector Switch, Transmission, PTO sense circuit, Engine Light, Oil Pressure Gauge.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

• Visually inspect all wiring, connectors, and components associated with the transmission system. They should look for any loose, damaged, or corroded wiring, components, or connectors, replacing them if needed.
• Save the freeze frame data and any stored trouble codes on the PCM using the scanner. Clear any codes and test drive the vehicle to see if the codes return. If the code returns, check the individual auto transmission connector to see if a reference voltage or ground signal are present.
• Check the transmission fluid level and condition and lookout for a burnt or abnormal smell, which can indicate that the transmission has suffered damage from a low fluid condition. If this is the case, the mechanic should remove the transmission pan and inspect it for pieces of the clutch or other debris.
• If the transmission fluid is low, fill the transmission fluid to a point that any leaks can be detected and repaired. Once all leaks are found and fixed, the transmission fluid must be filled to an appropriate level.
• Clear the code, allow the vehicle to reach a normal operating temperature, and test drive the vehicle to see if the trouble code returns.
• If the code returns and the transmission is still slipping or hesitating, the mechanic should connect a manual pressure gauge. Using the manual pressure gauge in conjunction with a hydraulic pressure diagram, they should check the pressure of the transmission hydraulic pump. The mechanic should compare their findings to manufacturer specifications.
• Use a manufacturer's wiring diagram to test PTO speed selector sensor circuits for resistance and continuity, comparing their findings to the manufacturer's specifications. If everything checks out and is in good condition, the next step is to diagnose the PCM for failure.
• Finally, once all repairs are made, clear the code and retest the system to see if the trouble code returns.

Common Mistakes When Diagnosing the P255E Code

Some of the common mistakes done while changing diagnosing the OBD code P255E are:

• Engine Misfire problem
• TCM/PCM failure
• PTO speed sensor problematic
• Internal Transmission problem
• Driveline problem