Error Code P099F: What It Means & What To Do?

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How does the control circuit turn high? What does P099F error code mean? Are there any symptoms? Is it possible to get rid of this error code? The shift solenoid ‘H’ will have high control circuit if the transmission fails or refuses to shift properly. In one such situation, the P099F error code gets stored in the system by the PCM.

The hydraulic fluid is generally used by the transmission control module (TCM) to engage with the clutch so that it remains smooth while driving. If there are any faults in the electrical circuit or if the shift solenoid is faulty, the P099F error code will be stored in the vehicle. Also, to measure the amount of oxygen in the exhaust, the oxygen sensors are used as they help you to know the ratio of air and fuel in the cylinder. The exhaust emission will be less and the fuel economy will be better if you enhance this mixture.

What causes this problem with the Shift Solenoid "H" Control Circuit High?

• Shift solenoid ‘H’ might be damaged.
• The shift solenoid ‘H’ circuit is shorted or has an opening.
• The electrical connection seems to be poor in the shift solenoid ‘H’.

1. Transmission Shift Solenoid – A damaged transmission shift solenoid can cause trouble to your engine system. Replace them immediately.
2. Shift Solenoid Valve – Is this component faulty? Are there any damages? Quickly replace with a new shift solenoid valve from Parts Avatar.
3. Transmission Control Module – A damaged TCM component can make your system misbehave. Replace/repair your TCM as needed.
4. Powertrain Control Module – A faulty PCM can give rise to the P099F error code. Replace them as soon as possible.
5. Engine Control Module – The P099F error code can be avoided by replacing the defective ECM.

Next important thing you need to know about are the common symptoms for this OBD error code P099F with your fuel volume control.

Common Symptoms

• The vehicle will consume more fuel.
• Transmission shift by the vehicle is not correct.
• Motor light stays on all the time.

Wish to correct this error code with your vehicle? Do you know what all you should do to make your car free from this P099F code? Well, don’t worry! We are here to guide you.

The P099F code is activated by the engine control module in combination with the engine system to take control of the oil pressure to the engine mechanism. It is generally installed in the valve system of the vehicle so as to change the valve timing between low and high. If there are any faults or an open or short circuit exist, then the P099F error code gets stored in the vehicle.

Apart from the fuel injector, you might need to undergo few more replacements. You might need transmission shift solenoid, shift solenoid valve, transmission control module, powertrain control module, engine control module, transmission fluid, and many other parts. Where to get them from? Well, if you want quality parts, then we can prove to be your dream destination.

Here are some steps which you should follow in order to diagnose this P099F fault code:

• The mechanic will be needing an OBD-II scanner or a DVOM to perform the diagnosis.
• The mechanic can check and see if the transmission fluid is clean and is up to the required level. If not, so, he can refill up to the required level.
• Further, he can continue by carefully inspecting every component like wires, connectors, fuses, harness to see for any possible damages or faults.
• If everything works fine, the mechanic will recover all freeze frame data and stored codes from the vehicle with the help of a diagnostic scanner by attaching it to the vehicle.
• The mechanic will start looking for possible faults and errors and repair them. Once the repair is done, test drive your vehicle and see, so that you will know if the error code appears again or not.
• This process of repair will be carried out until the error code stops showing.
• If the error does not return quickly, the mechanic will know that it was an intermittent connection.
• Sometimes, the solenoid itself can be damaged or defective, which gives rise to this error code.
• Also, the mechanic can perform a continuity test by checking the reference voltage between the shift solenoid and the PCM. For this process, the mechanic will separate every control modules to prevent memory loss.
• If the error still persists, the mechanic will visually inspect the powertrain control module if it is damaged or defective.
• After it is repaired, the mechanic will again retest the codes and test drive the vehicle. it is always a good habit to retest and test drive the vehicle so that it can help the mechanic with the actual area as to where the fault arose.

Common Mistakes When Diagnosing the P099F Code

• Transmission control module appears to be faulty.
• The transmission has fluid which is below the expected level.
• Transmission fluid pressure sensor seems to be faulty.
• The electrical wires are damaged.