P2820 - OBD Trouble Code

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Improper shifts and reduced fuel economy are the major setbacks for this kind of a problem. In extreme cases engine stalling and vehicle dying while slowing can be crucial on the road and in extreme conditions. All these are an indication of a problematic transmission thus storing OBD code P2820 in the PCM (powertrain control module) and the check engine light getting on.

OBD code P2820 means Pressure Control Solenoid "J" Performance/Stuck Off Issue. 

In order to apply the correct hydraulic pressure over various clutch pads that provide the correct gear ratios for the transmission system to work efficiently, the pressure control solenoids are used. These solenoids work by the current flow in the coil windings with the help of the electromagnetic fields. The TCM helps to manage the oil pump discharge pressure with the help of the pressure solenoids depending on various sensor inputs. Thus, when the TCM detects a malfunction in the pressure control solenoid “J”, OBD code P2820 gets stored in the system.

What causes this problem with the Pressure Control Solenoid "J" Performance/Stuck Off?

• Low transmission fluid level
• Dirty transmission fluid
• Faulty pressure control solenoids
• Solenoids harness is open or shorted
• Solenoids circuit, electrical connection faulty
• Transmission mechanical problems
• Transmission hydraulic control circuit
• Pressure control solenoid defective

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. 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.
3. 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?
4. Diagnostic Tools - Use factory grade diagnostic tools to resolve OBD code P2820 error. Buy new diagnostic tools and equipment for us.
5. Automatic Transmission Solenoid - If the transmission solenoid is faulty, it will not be able to circulate the transmission fluid through the valve body, thus causing driving issue. Thus, replace it immediately.
6. Transmission Control Module - If the TCM has malfunctioned, it can store wrong error codes and can also cause transmission problems. Thus replace it now!
7. Automatic Transmission Sensor - The transmission sensors help to predict the shaft speed as well as to execute correct gear ratios for the transmission system to work properly. Thus, replace faulty sensor now!
8. Auto Transmission Torque Converter - In rare cases the transmission torque converter can also be damaged, immensely harming the transmission system. Buy new parts from us!
9. Automatic Transmission Connector - Faulty connectors can be a major problem for various parts not functioning properly as well as causing damage to the wiring connection. Thus, it is important to replace faulty parts now!
10. Transmission Fluid - It is important to keep the transmission fluid at optimal levels for the hydraulic pressure system to work efficiently so that the pressure solenoids can work properly. Thus, keep the transmission fluid levels in check.

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P2820 here:

Common Symptoms

• Check Engine Light illuminated (Malfunction indicator lamp)
• Delayed shift or not shifting between gear
• Transmission slipping
• Loss of fuel economy
• Transmission may overheat
• Increased fuel consumption
• In some cases, there may be performance problems, such as dying when coming to a stop after driving on the freeway and/or misfire-like symptoms

Want to correct the Trouble Code P2820? Read these points mentioned below:

• Refill of Low transmission fluid level
• Dirty transmission fluid to be changed
• Repair or replace pressure control solenoids harness which is open or shorted
• Faulty solenoids circuit, electrical connection repair/replace
• Replace transmission pressure control solenoid

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It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2820 code to be stored:

• A mechanic will first input an OBD-II code reader into the vehicle's computer in order to read and identify the trouble code.
• A hydraulic pressure diagram should be fed into the proper opening in the transmission system in order to take pressure readings directly from the source.
• The transmission fluid should be tested with a dipstick and checked for problems.
• Check for faulty, damaged or broken wiring and connections to the transmission pressure control solenoid and replace them immediately.
• Next, check for the continuity of the solenoid by testing the component by removing the power. If a continuity or resistance is found, expect for faulty wiring.
• Any diagnostic findings should be compared with the car manufacturer's default specifications in order to pinpoint abnormalities.
• If there are other trouble codes registered on the OBD-II reader, it may offer additional guidance in finding the root problem.

Common Mistakes When Diagnosing the P2820 Code

Oftentimes the PCM sensor and circuit is blamed, and replaced, without checking the circuit as well as neglecting the damaged wiring and connectors. Because there can be several causes for this code, a complete inspection should be carried out in order to avoid repairs that may be unnecessary and more expensive.