The Engine Fault Code P0955 refers to an issue with the Auto Shift Manual Mode Circuit. This code usually indicates a problem in the system that allows the driver to manually shift gears in an automatic transmission. Heres a breakdown of what it means and possible manufacturer-specific interpretations:
General Meaning:
– P0955: This code suggests that there is a malfunction in the circuit that controls the manual shifting feature of the automatic transmission. This can be caused by faulty wiring, a bad shift lever, or a problem in the transmission control module (TCM).
Possible Causes:
1. Damaged wiring or connectors in the manual shift circuit.
2. A faulty shift lever or switch.
3. Issues within the transmission control module.
4. Low transmission fluid levels or poor fluid quality.
Manufacturer-Specific Meanings:
– Porsche: May indicate a problem with the PDK (Porsche Doppelkupplung) system, relating to the manual shifting feature.
– Mini: Could relate to issues with the manual mode in the automatic transmission, possibly affecting the drivers ability to select gears.
– Mercedes-Benz: Might point to a malfunction in the gearbox control unit, affecting the manual shifting functionality.
– Audi: Similar to Mercedes, it could indicate a fault in the transmission control system affecting manual mode.
– Jaguar: May refer to issues with the Jaguar`s Quickshift system, which allows manual gear selection.
– Land Rover: Could indicate a problem with the Terrain Response system, which may affect manual shifting capabilities in certain models.
What to Do:
1. Check Wiring: Inspect the wiring and connectors for any visible damage or corrosion.
2. Scan for Codes: Use an OBD-II scanner to check for additional codes that may provide more context.
3. Inspect Transmission Fluid: Ensure that the transmission fluid is at the correct level and is in good condition.
4. Consult a Professional: If the issue persists, its best to take the vehicle to a qualified mechanic or dealership for a thorough diagnosis.
Understanding this code can help you troubleshoot and potentially fix the issue with your vehicles transmission system.
The Engine Fault Code P0955 refers to an issue with the Auto Shift Manual Mode Circuit. This code can appear in various European cars, including Porsche, Mini, Mercedes, Audi, Jaguar, and Land Rover. Here are some common causes and possible variations depending on the manufacturer:
Common Causes:
1. Faulty Transmission Control Module (TCM): The TCM manages the shifting of gears. If it fails, it can trigger this code.
2. Wiring Issues: Damaged or corroded wiring in the manual mode circuit can lead to a poor connection, causing the code to appear.
3. Faulty Shift Selector: The shift selector or lever might be malfunctioning, preventing proper communication with the TCM.
4. Software Issues: Sometimes, the software in the TCM may need an update or reprogramming to resolve the issue.
5. Sensor Malfunction: Sensors that monitor the position of the gear selector could be faulty, leading to incorrect readings.
Manufacturer-Specific Variations:
– Porsche: In some models, issues with the PDK (Porsche Doppelkupplung) transmission can trigger this code. Check for any TCM updates specific to your model year.
– Mini: For Mini vehicles, the issue may be related to the gear shift module, which can wear out over time.
– Mercedes: In Mercedes vehicles, the code might be linked to the mechatronic unit, which combines the transmission control and hydraulic components.
– Audi: Audi models may have similar issues with the TCM, but it can also be related to the drive-by-wire system that controls shifting.
– Jaguar: Jaguar vehicles might trigger this code due to problems with the electronic gear selector or the software in the transmission control system.
– Land Rover: In Land Rover models, the problem could stem from the Terrain Response system affecting the transmission settings.
If you encounter the P0955 code, its best to start with a thorough inspection of the wiring and connections. Then, check the TCM and associated components. Depending on the make and model, specific issues may arise, so consulting a repair manual or a professional for your vehicle is a good idea.
The Engine Fault Code P0955 indicates a problem with the Auto Shift Manual Mode Circuit. This code is common in vehicles with automatic transmissions that offer a manual shifting option. Here`s how to troubleshoot and potentially fix this issue, keeping in mind that procedures may vary by manufacturer and model.
General Steps to Fix P0955:
1. Check the Owner`s Manual: Before diving in, consult your vehicle`s manual for specific guidance related to the transmission system.
2. Inspect the Wiring and Connectors:
– Look for damaged, frayed, or corroded wires in the circuit.
– Check the connectors for dirt or corrosion that could cause a poor connection.
3. Examine the Shift Lever Assembly:
– Ensure that the shift lever is functioning correctly. Sometimes, a loose or damaged lever can trigger this code.
4. Test the Transmission Control Module (TCM):
– Use an OBD-II scanner to check for other related codes. If there are multiple codes, the TCM may be faulty.
– If you have access to a multimeter, test the TCM for proper voltage and ground.
5. Check for Fluid Issues:
– Low or dirty transmission fluid can cause shifting problems. Check the fluid level and condition, and replace it if necessary.
6. Clear the Code:
– After making repairs, clear the code using an OBD-II 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 TCM. Porsche may have specific reprogramming procedures for certain models.
– Mini:
– Inspect the gear selector switch and wiring harness, as issues here can often trigger P0955.
– Mercedes:
– Look for issues with the conductor plate or valve body, which can be common in older models.
– Audi:
– Audi vehicles may require a specialized scan tool to reset adaptations after repairs.
– Jaguar:
– Check the transmission fluid level and quality, as Jaguar vehicles can be sensitive to fluid conditions.
– Land Rover:
– Some Land Rover models may have specific calibration procedures that need to be followed after repairs.
If youre not comfortable performing these checks yourself, its a good idea to consult a professional mechanic, especially for complex issues related to the transmission. Always remember to take safety precautions when working on your vehicle.
Driving with a P0955 code, which relates to the Auto Shift Manual Mode Circuit, can be risky. This code typically indicates an issue with the transmission control system, particularly the manual shift feature. Heres a breakdown of what it means for different manufacturers:
1. Porsche: If you have a Porsche, this code can affect how you shift gears. It might not go into manual mode, which can limit your driving experience. It`s best to avoid driving until it`s fixed to prevent further damage.
2. Mini: For Mini owners, the P0955 code might cause the manual mode to malfunction. While you can still drive in automatic mode, you should get it checked soon to avoid complications.
3. Mercedes: In Mercedes vehicles, this code can lead to poor shifting performance. You may still drive, but its advisable to have it diagnosed quickly to prevent transmission issues.
4. Audi: Audi drivers might experience a loss of manual shifting capability. Driving in automatic mode is usually fine, but its best to address the issue to avoid potential long-term damage.
5. Jaguar: If you have a Jaguar, the P0955 code could mean that the manual mode wont work. While you can still drive in automatic, its wise to get it inspected to ensure there are no underlying problems.
6. Land Rover: For Land Rover vehicles, this code may affect shifting. Driving is possible, but its recommended to have it looked at soon to avoid more serious transmission issues.
Our view, while you might be able to drive with a P0955 code, its best to have the issue diagnosed and repaired as soon as possible. Ignoring it could lead to more significant problems down the line.
