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Engine Fault Code P0787

Shift/Timing Solenoid Low

Care Engine Code Reader
The Engine Fault Code P0787 refers to a problem with the shift timing solenoid in an automatic transmission. This code usually indicates that the solenoid is not functioning properly, which can lead to issues with shifting gears. Heres a breakdown of what it means and how it might differ among manufacturers:

General Meaning:
– P0787: Shift/Timing Solenoid Low
– This code suggests that the transmission control module (TCM) is detecting a low voltage or an open circuit in the shift solenoid circuit. This can affect the transmission`s ability to shift gears smoothly.

Possible Symptoms:
– Rough or harsh shifting
– Delayed engagement when shifting
– Stalling or slipping of the transmission
– Warning lights on the dashboard

Possible Causes:
– Faulty shift solenoid
– Wiring issues (shorts or open circuits)
– Low transmission fluid levels
– Faulty TCM or transmission control issues
– Internal transmission problems

Manufacturer Differences:
While P0787 generally means the same across many manufacturers, there can be slight variations in how it`s interpreted or what it affects. Here are some possible manufacturer-specific meanings:

1. Porsche: May indicate issues with the PDK transmission control.
2. Mini: Could relate to the BMW-developed automatic transmission, affecting shift quality.
3. Mercedes: Might point to a malfunction in the 7G-Tronic or other automatic transmissions.
4. Audi: Similar to VW, it could indicate issues with the dual-clutch transmission (DSG).
5. Jaguar: May involve the ZF transmission, which is common in many luxury vehicles.
6. Land Rover: Could relate to the Terrain Response system affecting gear selection.

What to Do:
If you encounter this code, its best to:
1. Check the transmission fluid level and condition.
2. Inspect the wiring and connectors for damage.
3. Test the shift solenoid for proper operation.
4. Use a scan tool to clear the code and see if it returns.
5. If the problem persists, consider consulting a professional mechanic familiar with European cars.

Always refer to the specific service manual for your vehicle for more detailed troubleshooting steps.
The Engine Fault Code P0787 indicates a problem with the shift or timing solenoid in the transmission. This code can appear 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 details:

Common Causes:
1. Faulty Shift Solenoid: The solenoid may be stuck or malfunctioning, preventing proper gear shifting.
2. Wiring Issues: Damaged or corroded wiring or connectors can disrupt the signal between the transmission control module and the solenoid.
3. Transmission Fluid Issues: Low fluid levels or dirty fluid can affect the solenoid`s operation.
4. Transmission Control Module (TCM) Problems: A malfunctioning TCM may not send the correct signals to the solenoid.
5. Mechanical Issues: Internal transmission problems, such as worn gears or clutches, can also trigger this code.

Manufacturer-Specific Notes:
Porsche: In some Porsche models, this code may be linked to more complex transmission systems. Its crucial to check for software updates or reprogramming needs.

Mini: For Mini vehicles, especially those with automatic transmissions, low fluid levels or a faulty transmission oil pump can be common culprits.

Mercedes: Mercedes vehicles often have sophisticated transmission control systems. A diagnostic scan can reveal if there are additional codes that help pinpoint the issue.

Audi: Audi`s dual-clutch transmissions may show this code if the clutch pack is worn or if theres an issue with the mechatronic unit.

Jaguar: In Jaguars, this code can sometimes arise from software issues, so checking for updates is essential.

Land Rover: For Land Rovers, a common issue could be related to the air intake system affecting the transmission`s performance, resulting in this code.


If you encounter the P0787 code, its best to start with a thorough diagnostic to identify the specific issue. Depending on the make and model, the repair approach may vary. Always consult the vehicle`s service manual for specific troubleshooting steps.
The P0787 code indicates a problem with the shift or timing solenoid in the transmission system. This code can appear in various vehicles, including European brands like Porsche, Mini, Mercedes, Audi, Jaguar, and Land Rover. Here are some steps to help you fix this issue:

General Steps to Fix P0787:

1. Check Transmission Fluid:
– Ensure the transmission fluid is at the correct level and is clean. Low or dirty fluid can cause solenoid issues.

2. Inspect Wiring and Connectors:
– Check the wiring and connectors leading to the shift solenoid. Look for any signs of damage, corrosion, or loose connections.

3. Test the Shift Solenoid:
– Use a multimeter to test the solenoid for proper resistance. If its outside the manufacturers specified range, it may need to be replaced.

4. Scan for Additional Codes:
– Use an OBD-II scanner to check for any other codes. Sometimes, multiple codes can indicate a bigger issue.

5. Replace the Shift Solenoid:
– If the solenoid is faulty, replace it. Make sure to use a part that is compatible with your specific make and model.

6. Check Transmission Control Module (TCM):
– In some cases, the TCM may be faulty. If all else fails, you might need to have it diagnosed and possibly replaced.

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

Manufacturer-Specific Considerations:

Porsche:
– Check for software updates for the TCM, as Porsche often releases updates that can fix transmission issues.

Mini:
– Mini vehicles may have specific solenoid designs, so ensure you get the correct part from a Mini dealer or trusted supplier.

Mercedes:
– Mercedes models may have adaptive transmission features. After replacing the solenoid, you may need to perform a transmission adaptation reset.

Audi:
– Audi often uses complex transmission systems. If you suspect a TCM issue, its best to use a VAG-com scanner for accurate diagnostics.

Jaguar:
– Ensure that the transmission fluid is the correct type, as Jaguar vehicles can be sensitive to fluid specifications.

Land Rover:
– Land Rover models may require special tools for solenoid replacement. Consult a repair manual for specific instructions.

Final Tips:
– Always refer to the vehicles repair manual for specific procedures and specifications.
– If youre not comfortable doing the repairs yourself, consider taking the vehicle to a professional mechanic, especially for complex transmission issues.
Driving with a P0787 code, which indicates a problem with the shift/timing solenoid, is generally not safe. This code usually means that there`s an issue with the transmission, specifically with how it shifts gears. Heres a breakdown of what you should consider for different manufacturers:

General Concerns:
1. Transmission Performance: You may experience rough shifting, slipping, or even the inability to shift into certain gears.
2. Potential Damage: Continuing to drive can worsen the issue, leading to more extensive and costly repairs.
3. Safety Risks: If the transmission fails while driving, it could lead to loss of control.

Manufacturer-Specific Insights:

1. Porsche:
– Porsches have advanced transmissions, and issues can lead to performance drops. It`s best to get it checked immediately.

2. Mini:
– Mini vehicles often have more sensitive transmissions. Ignoring the code could lead to a complete transmission failure.

3. Mercedes:
– Mercedes vehicles may have features that allow for `limp mode,` where the car restricts performance to protect the transmission. Driving in this mode is not ideal.

4. Audi:
– Audi`s Quattro system can be affected. If the transmission struggles, it might impact all-wheel drive performance, which is crucial for safety.

5. Jaguar:
– Jaguars are known for their smooth driving experience. A P0787 code could significantly affect this, and it`s advisable to address it quickly.

6. Land Rover:
– Given their off-road capabilities, a transmission issue could be especially problematic in rough conditions. Its best to have it checked out soon.


In all cases, it`s best to avoid driving the vehicle until the issue is diagnosed and repaired. If you see a P0787 code, schedule a visit with a mechanic as soon as possible to prevent further damage and ensure your safety.

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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