P2812 OBD Error Code: Problem & Solutions

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The trouble code P2812 can be described as Pressure Control Solenoid "G" Control Circuit/Open. The error code P2812 would start triggering when the TCM would detect some faults in pressure control solenoid "G" control circuit. One thing which you must keep in mind that its symptoms as well as causes would surely vary as it depends upon a number of things.

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 to another. The transmission control module (TCM) would utilize the vehicle speed signal to decide the actual gear position (1st, 2nd, 3rd, 4th. 5th or 6th gear). After that the transmission control module would compare the actual gear with the shift schedule in the TCM memory to detect shift solenoid valves and valve body mechanical issues.

What causes this problem with the Pressure Control Solenoid "G" Control Circuit/Open?

Polluted fluid

• The transmission filter might be dirty or clogged
• The fluid level might not be sufficient
• Flaws in the PCM
• Faults in the transmission valve body
• The shift solenoid might not be working properly
• Corroded or damaged connector
• Some defects in the wiring
• Cramped hydraulic passages
• There can be a failure in the pressure control solenoid

1. Transmission Fluid Pump - Harsh shifts and audible transmission noise are the major symptoms of faulty fluid pump. This leads to decreased performance and chances of increased physical damage to the transmission components. Thus, replace faulty pump now!
2. 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.
3. Car Battery - Battery plays a vital role in powering the various systems of the car. If the starting and charging systems are not working properly, it will affect the transmission system badly. Thus, replace it now. Buy a new battery from us today!
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. Automatic Transmission Module - Faulty transmission module can cause problematic down shifts and upshifts, leading to stalling while accelerating or slowing down. This can also hamper many transmission system parts. Thus, replace it now!
6. 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?
7. Diagnostic Tools - Take the help of a professional mechanic to diagnose OBD code error. Use high grade diagnostic tools to resolve this issue. Buy new tools and equipment form us!

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P2812 code by mentioning some major symptoms below:

Common Symptoms

• Transmission skidding
• Overheating of the transmission
• Issue of transmission catches in gear
• Overall fuel economy can start declining
• There can be engine misfires
• Vehicle might start entering the limp mode
• Flashing up of the check engine light

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P2812:

• Repair or replace the flawed transmission valve body
• If you find out that the transmission filter is dirty or clogged, then it should be repaired or replaced
• Correct the malfunctioning shift solenoid
• Make sure that you repair the defective wiring
• Inspect the internal failure in the transmission
• Correct the insufficient fluid level
• The faulty powertrain control module should be repaired or replaced

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 transmission control module, powertrain control module, transmission valve body, transmission filter, pressure control solenoid, pcm car, ecm car, transmission pump, pcm module, ecm 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:

Check for technical service bulletins which pertain to the vehicle, symptoms, and codes prior to beginning the troubleshooting process for any malfunction. In some circumstances this can save a lot of time in the long run by pointing you in the right direction. You can always check the vehicle records to verify the last time that the filter and fluid was changed if possible.

Fluid & Wiring Inspections

• The first step is to make sure the fluid level is correct and inspect the condition of the fluid for contamination.
• After that perform visual inspection to check the associated wiring for obvious defects such as scraping, rubbing, bare wires, or burn spots should be performed.
• Next is to check the connectors and connections for security, corrosion and damaged pins. This process must include all wiring and connectors to the transmission solenoids, transmission pump and the PCM.
• It depends upon the configuration; the transmission linkage should be inspected for security and binding issues.

Advanced Steps

• The advanced steps become very vehicle specific and require the appropriate advanced equipment to perform accurately.
• These procedures require a digital multimeter and the specific technical references for the vehicle.
• Voltage requirements will vary based on the specific year and model of the vehicle.
• You should follow the specific troubleshooting chart for your vehicle.

Continuity Checks

Continuity checks should always be performed with the power removed from the circuit and the normal readings for wiring and connections should be 0 ohms of resistance unless otherwise specified by the technical data.

Resistance or no continuity is an indication of faulty wiring that is open or shorted and must be repaired or replaced.

Common Mistakes When Diagnosing The P2812 Code

• Some issues related to the wiring
• Low transmission fluid level
• Faults in the transmission pressure control solenoid
• Failure in the transmission control module