P0930 - Shift Interlock Solenoid/Drive Control Circuit "A" Low

P0930 – OBD-II Trouble Code Technical Description

Shift Lock Solenoid/Drive Control Circuit “A” Low

What does the fault code mean P0930?

You have discovered that the problem with your vehicle is the P0930 flashing code. This code is a common set of OBD-II transmission codes due to a low voltage issue at the shift lock solenoid. A vehicle's TCM uses solenoids to control the fluid pressure needed to activate the various gears within the transmission. If the TCM detects an abnormal signal from the shift solenoid, it will set a P0930 code.

The "P" in the first position of the Diagnostic Trouble Code (DTC) indicates the powertrain system (engine and transmission), the "0" in the second position indicates that it is a generic OBD-II (OBD2) DTC. A "9" in the third position of the fault code indicates a malfunction. The last two characters "30" are the DTC number. OBD2 Diagnostic Trouble Code P0930 indicates that a low signal is detected on the Shift Lock Solenoid/Drive “A” control circuit.

To prevent the transmission from accidentally shifting out of park, modern vehicles are equipped with a part called a shift lock solenoid. Trouble code P0930 means that the shift lock solenoid is receiving an unusually low voltage signal.

Possible reasons

What causes this low signal problem on the shift lock/drive "A" solenoid control circuit?

• Shift lock solenoid faulty.
• Problem with brake light switch.
• Battery voltage is low.
• Transmission fluid is too low or too dirty.
• Damage to wiring or connector.

What are the symptoms of a fault code? P0930?

It is very important to know the symptoms of the problem because only then can you solve it. That's why we have listed here some of the main symptoms of OBD code P0930:

• The transmission cannot be shifted from the Park position.
• Check to see if the engine light is on.
• Increased fuel consumption, resulting in poor fuel economy.
• Gear shifting does not occur correctly.

How to diagnose a fault code P0930?

A simple diagnosis of engine error code OBD P0930 involves the following steps:

1. Connect the OBD scanner to your car's diagnostic port to get all the trouble codes. Write down these codes and proceed with the diagnosis in the order in which they were received. Some of the codes set before P0930 may cause it to set. Sort through all these codes and clear them. After this, take the car for a test drive to ensure that the code has been reset. If this does not happen, it is likely an intermittent condition, which in most cases may worsen before a correct diagnosis can be made.
2. If the code is cleared, proceed with diagnostics. Take a look at the Switch to find a visual tab that you can open. This is the bypass needed to access the panel next to the switch. You can use a small screwdriver for this. Check the solenoid for integrity and replace it if necessary. If you are unable to exit the parking lot, your vehicle will be stationary. This is a serious problem, but the code is not significant in any damage that may be caused to the vehicle.

Diagnostic errors

Common diagnostic errors may include:

1. Lack of attention to detail: Failure to pay attention to small details or miss important signs can lead to a misdiagnosis.
2. Insufficient Validation and Testing: Insufficient testing or testing multiple options may lead to an incorrect initial conclusion.
3. Wrong Assumptions: Making assumptions about a problem without sufficient testing can lead to misdiagnosis.
4. Insufficient knowledge and experience: Insufficient knowledge of the system or insufficient experience may lead to misunderstanding of the symptoms and causes of malfunctions.
5. Using outdated or inappropriate tools: Using outdated or inappropriate diagnostic tools may lead to inaccurate results.
6. Neglecting diagnostic codes: Not considering diagnostic codes or misinterpreting them can lead to a misdiagnosis.
7. Not following the diagnostic process: Not following a systematic approach to diagnosis can result in missing important steps and details needed to identify the correct cause of the problem.

How serious is the fault code? P0930?

Trouble code P0930, which indicates a low signal in the shift lock solenoid control circuit, is serious because it can prevent the transmission from shifting out of Park. This may mean that the car remains immobilized in place, despite the engine being functional. In this case, the vehicle may require towing or maintenance.

It can also cause increased fuel consumption due to improper gear shifting, which can negatively impact fuel economy. Therefore, although the code itself does not pose a threat to the immediate safety of the vehicle, it can cause significant inconvenience and require urgent attention to restore normal operation of the transmission.

What repair will help eliminate the code? P0930?

To resolve the P0930 code, it is necessary to conduct a thorough diagnosis and determine the specific cause of this error. In most cases, the P0930 code is related to problems in the shift lock solenoid control circuit. Here are some possible repairs:

1. Replacing or Repairing the Shift Lock Solenoid: If the problem is due to a faulty solenoid itself, it will need to be replaced or repaired.
2. Check Wiring and Connectors: Check the wiring, connections and connectors associated with the shift lock solenoid. If damage, corrosion or broken wiring is detected, they must be replaced or repaired.
3. Checking the Transmission Fluid Level and Condition: Make sure the transmission fluid level is within the recommended range and that the fluid is in good condition. Replace transmission fluid if necessary.
4. Checking and Replacing the Brake Light Switch: Sometimes the problem can be due to a faulty brake light switch, which can cause low voltage at the shift lock solenoid.

It is also important to note that proper repair and resolution of the P0930 code may require the assistance of an experienced auto mechanic or automotive transmission specialist.

What is P0930 Engine Code [Quick Guide]

P0930 – Brand-specific information

OBD-II trouble code P0930 refers to transmission problems and is associated with the shift lock solenoid. This code is not specific to any vehicle brand, but applies to many makes and models. All vehicles using the OBD-II (OBD2) standard may display a P0930 code when there is a problem with the shift lock solenoid.

For more detailed information about the specifications and solutions for the P0930 code, it is recommended that you refer to the service documentation for your specific vehicle make and model or consult an authorized service center.