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Engine Fault Code P0775

Pressure Control Solenoid B

Care Engine Code Reader
The Engine Fault Code P0775 refers to an issue with the Pressure Control Solenoid B in the transmission system. This solenoid is responsible for regulating the hydraulic pressure in the transmission, which is crucial for smooth shifting and overall performance. When the engine control module (ECM) detects a problem with this solenoid, it triggers the P0775 code.

While the basic meaning of P0775 is similar across many manufacturers, there can be slight differences in how this code is interpreted or what it may indicate based on the specific vehicle. Here are some alternative meanings or related codes based on different manufacturers:

1. P0775 (Generic): Indicates a malfunction in the Pressure Control Solenoid B circuit.
2. P0775 (Porsche): Typically indicates a similar issue with the transmission control system, often linked to poor shifting or transmission performance.
3. P0775 (Mini): May also suggest issues with the transmission fluid pressure, affecting gear changes.
4. P0775 (Mercedes-Benz): Could indicate a problem with the transmission control module or the solenoid itself, potentially leading to transmission slipping.
5. P0775 (Audi): Similar to other brands, it indicates a fault in the Pressure Control Solenoid, affecting transmission performance.
6. P0775 (Jaguar): Indicates a similar solenoid issue, which may lead to transmission problems.
7. P0775 (Land Rover): May suggest issues with the transmission system, possibly requiring a solenoid replacement or further diagnostics.

If you encounter this code, its essential to diagnose the problem accurately. Common causes include faulty solenoids, wiring issues, or low transmission fluid levels. Always consult the specific vehicle`s service manual for detailed information and troubleshooting steps.
The Engine Fault Code P0775 refers to a problem with the Pressure Control Solenoid B in the transmission system. This code can show up in various vehicles, including European brands like Porsche, Mini, Mercedes, Audi, Jaguar, and Land Rover. Here are some common causes for this code, along with manufacturer-specific considerations:

Common Causes:
1. Faulty Pressure Control Solenoid B: The solenoid itself may be defective, leading to incorrect pressure readings.
2. Wiring Issues: Damaged or corroded wiring or connectors can disrupt the signal to the solenoid.
3. Transmission Fluid Issues: Low or dirty transmission fluid can affect the performance of the solenoid.
4. Transmission Control Module (TCM) Failure: The TCM may malfunction, causing incorrect signals to be sent to the solenoid.
5. Internal Transmission Problems: Issues like worn clutches or gears can also trigger this code.

Manufacturer-Specific Considerations:

Porsche: In some models, the issue might be related to specific transmission types, such as the PDK. Check for software updates or recalls.

Mini: For Mini vehicles, the issue may often be linked to the BMW-designed transmission. Check for fluid level and quality, as they can be sensitive to contamination.

Mercedes: Mercedes vehicles may have more complex electronic systems. A diagnostic scan might reveal additional codes that can help pinpoint the issue.

Audi: Audi models often feature dual-clutch transmissions. Look for software updates or recalibration needs that could resolve the solenoid issue.

Jaguar: In Jaguars, the P0775 code could be related to the ZF transmission. Regular maintenance and fluid changes are crucial for these systems.

Land Rover: Land Rover vehicles may have unique transmission issues, especially in older models. Inspecting the wiring harness for damage is often a good first step.


If you encounter the P0775 code, it`s best to start with a thorough inspection of the solenoid and associated wiring. Depending on the manufacturer, additional steps like software updates or specific maintenance may also be necessary. Always consult the vehicle`s service manual for detailed troubleshooting steps.
Fixing Engine Fault Code P0775, which relates to `Pressure Control Solenoid B,` can vary depending on the vehicle make and model. Heres a general approach along with specifics for European cars like Porsche, Mini, Mercedes, Audi, Jaguar, and Land Rover.

General Steps to Fix P0775:

1. Scan the Codes: First, use an OBD-II scanner to confirm the P0775 code and check for any other related codes.

2. Visual Inspection:
– Check the wiring and connectors leading to the pressure control solenoid. Look for frayed wires, loose connections, or corrosion.
– Inspect the transmission fluid level and condition. Dark or burnt fluid can indicate problems.

3. Test the Solenoid:
– Disconnect the solenoid and test its resistance using a multimeter. Compare the reading with the manufacturers specifications.
– If the solenoid is faulty, it will need to be replaced.

4. Check for Blockages:
– Sometimes, debris can clog the solenoid or the transmission filter. Inspect the filter and replace it if necessary.

5. Transmission Fluid Change: If the fluid is old or contaminated, consider doing a fluid change. Use the correct type of fluid as specified by the manufacturer.

6. Clear the Codes: After making repairs, clear the codes with the scanner and take the vehicle for a test drive to see if the code returns.

Manufacturer-Specific Considerations:

Porsche:
– Check for software updates for the transmission control module (TCM). Sometimes, a reprogramming can fix solenoid issues.

Mini:
– Mini vehicles often have specific solenoid packs. If the solenoid is integrated into a pack, you may need to replace the entire assembly.

Mercedes:
– For some models, the TCM may require recalibration after replacing the solenoid. Ensure that you follow the correct procedure for your model.

Audi:
– Audi may have specific solenoid types that are known for failure. Research any recalls or common issues for your specific model.

Jaguar:
– In some Jaguars, the transmission fluid cooler can become blocked, affecting solenoid performance. Ensure its clear.

Land Rover:
– Land Rover models may have complex transmission systems. If the issue persists after replacing the solenoid, consider a professional diagnosis.


Addressing a P0775 code involves a combination of inspection, testing, and possibly replacing parts. Always refer to the specific repair manual for your vehicle for detailed instructions and specifications. If you`re unsure or the problem persists, it might be best to consult a professional mechanic.
Driving with a P0775 code, which indicates an issue with the Pressure Control Solenoid B, is not recommended. This code usually points to a problem in the transmission system, specifically related to the solenoid that helps control fluid pressure. Heres a breakdown based on different manufacturers:

General Concerns:
1. Transmission Performance: A faulty pressure control solenoid can lead to shifting issues, such as harsh or delayed shifts. This can make driving unsafe, especially in traffic or on the highway.
2. Potential Damage: Continuing to drive with this code can cause further damage to the transmission, leading to costly repairs.

Manufacturer-Specific Considerations:

Porsche: P0775 can affect models with automatic transmissions. If you notice shifting problems, its best to avoid driving until the issue is resolved.

Mini: In Mini vehicles, a malfunctioning solenoid can lead to poor performance and potential overheating. It`s safer to get it checked out soon.

Mercedes: Mercedes vehicles often have advanced transmission systems. Ignoring a P0775 code could lead to more severe transmission failures, so its advisable to address it quickly.

Audi: Similar to Mercedes, Audi vehicles may experience significant transmission issues if the solenoid is not functioning. Its best to limit driving and seek repairs.

Jaguar: For Jaguars, a P0775 code can lead to erratic shifting. Its safer to have it diagnosed and fixed before driving extensively.

Land Rover: In Land Rover vehicles, a faulty solenoid can affect off-road capabilities and overall drivability. Its wise to have it checked before taking it off-road or on long trips.


Our view, if you see a P0775 code, its best to have the vehicle inspected by a professional as soon as possible. Avoid driving if you notice any unusual transmission behavior to prevent further damage.

OBD Codes Explained

Engine Codes

P is for PowerTrain - Engine and Transmission.

P0 Indicates Generic Powertrain Codes

P0 Codes indicate problems with the powertrain and are common for all vehicles using the OBD-II Standard.

P1 Enhanced Manufacturer Specific Codes

P1 Codes are specific to manufacturers.

Sub-System

The 3rd Digit indicates the Sub-System

1 – Emission Management

2 – Injector Circuit

3 – Ignition

4 – Emission Control

5 – Vehicle Speed and Idle

6 – Computer and Output

7 – Transmission

8 – Transmission

9 – Reserved

0 – Reserved

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