The engine fault code P0985 refers to a problem with the Shift Solenoid E Control Circuit, specifically indicating that the circuit is reading low voltage or is not functioning properly. This code is often related to automatic transmissions and can affect how the vehicle shifts gears.
Possible Causes:
1. Faulty Shift Solenoid E: The solenoid itself may be defective.
2. Wiring Issues: There could be damaged wiring or poor connections in the circuit.
3. Transmission Control Module (TCM) Issues: The TCM might not be sending the correct signals.
4. Fluid Issues: Low transmission fluid levels or dirty fluid can cause shifting problems.
5. Mechanical Issues: Problems within the transmission itself may also trigger this code.
Alternative Meanings by Manufacturer:
While P0985 generally has the same meaning across many manufacturers, some might have specific interpretations or additional details. Here are a few examples:
– Audi: Similar issues may arise in models like the Audi A4 or Q5, often linked to their multitronic or S tronic transmissions.
– Mercedes-Benz: In models like the C-Class or E-Class, this code may relate to their 7G-Tronic transmission systems.
– Porsche: For models like the Cayenne or Panamera, it can indicate solenoid issues in their PDK transmission.
– Mini: In Mini models, it may indicate a fault in the automatic transmission control system.
– Jaguar: For Jaguar vehicles, it may relate to their ZF automatic transmission systems.
– Land Rover: Similar issues may arise in models like the Range Rover or Discovery, often linked to their 8-speed automatic transmissions.
Diagnosis and Repair:
To address the P0985 code, follow these steps:
1. Check the Transmission Fluid: Ensure it`s at the correct level and in good condition.
2. Inspect Wiring and Connectors: Look for any signs of damage or corrosion.
3. Test the Shift Solenoid: Use a multimeter to check the solenoid`s resistance and operation.
4. Scan for Additional Codes: There may be other related codes that can provide more context.
5. Consult the Service Manual: Each vehicle may have specific troubleshooting steps.
If you`re not comfortable with these checks, it might be best to take your vehicle to a professional mechanic who specializes in European cars.
The engine fault code P0985 indicates a problem with the Shift Solenoid E Control Circuit, specifically that it is reading low voltage. This code can be triggered by a few different issues, and while the general cause is similar across various manufacturers, there can be some differences. Here are the common causes:
1. Faulty Shift Solenoid E: The solenoid itself may be defective, causing it to not function properly.
2. Wiring Issues: Damaged or corroded wiring and connectors in the control circuit can lead to low voltage readings. This can happen due to wear and tear, exposure to heat, or moisture.
3. Transmission Control Module (TCM) Problems: If the TCM is malfunctioning, it may not send the correct signals to the solenoid, leading to low voltage.
4. Low Transmission Fluid: Insufficient fluid levels can affect the operation of the solenoid and cause issues.
5. Faulty Ground Connection: A poor ground connection can lead to low voltage readings in the circuit.
6. Other Transmission Issues: Problems with the transmission itself, such as internal damage or wear, can also trigger this code.
Manufacturer-Specific Considerations:
– Porsche: Look for software updates for the TCM, as they may have specific reprogramming needs.
– Mini: Check for known issues with the wiring harness, as they can be sensitive to wear and tear.
– Mercedes: Mercedes vehicles may have more complex electronic systems, so a thorough diagnostic scan may be necessary to pinpoint the issue.
– Audi: Audi models often have specific TCM settings that may need to be calibrated or reset after repairs.
– Jaguar: Jaguars might have unique solenoid configurations, so refer to the service manual for specific testing procedures.
– Land Rover: Land Rovers can have issues related to their air suspension affecting the transmission, so it`s essential to check for related faults.
In any case, it`s best to perform a thorough diagnostic check to confirm the exact cause before replacing any parts.
The P0985 code indicates a problem with the Shift Solenoid E control circuit, which is part of the transmission system. This code can appear in various vehicles, including those from European manufacturers like Porsche, Mini, Mercedes, Audi, Jaguar, and Land Rover. Heres a general guide on how to fix this issue, along with some manufacturer-specific notes.
General Steps to Fix P0985:
1. Check for Other Codes: Use an OBD-II scanner to see if there are other trouble codes. If there are, address those first.
2. Inspect Wiring and Connectors:
– Look for damaged, frayed, or corroded wires in the shift solenoid circuit.
– Check the connectors for any signs of corrosion or poor connections.
3. Test the Shift Solenoid:
– Use a multimeter to check the resistance of the solenoid. Compare your readings to the specifications in the service manual.
– If the solenoid is faulty, replace it.
4. Check the Transmission Fluid:
– Low or dirty transmission fluid can cause issues. Check the fluid level and condition. If it`s low, top it off or replace it if it`s dirty.
5. Inspect the Transmission Control Module (TCM):
– The TCM controls the solenoids. If its malfunctioning, it could lead to this code. Consider testing or replacing it if necessary.
6. Clear the Codes and Test Drive:
– After making repairs, clear the codes and take the vehicle for a test drive to see if the code returns.
Manufacturer-Specific Notes:
– Porsche: Depending on the model, you may need to access the transmission control unit through the onboard diagnostics. Ensure you have the right tools for any specific access points.
– Mini: For Mini models, sometimes the issue can be linked to software updates. Check if the vehicles software is up to date.
– Mercedes: In some Mercedes models, the P0985 code can be caused by a faulty conductor plate. If you suspect this, consider replacing it.
– Audi: Audi vehicles may have more complex transmission systems. If the basic checks dont resolve the issue, it might require a deeper diagnosis with specialized tools.
– Jaguar and Land Rover: These brands often have integrated systems. If youve ruled out the solenoid and wiring, you may need to consult a dealer or specialist for advanced diagnostics.
Fixing the P0985 code involves a mix of visual inspections, testing components, and possibly replacing parts. Always refer to your vehicles service manual for specific details. If you`re not comfortable with these steps, consider seeking help from a professional mechanic.
Driving with a P0985 code, which indicates a problem with the Shift Solenoid E Control Circuit, is generally not safe. This code usually means that the transmission might not shift properly, which can lead to poor performance or even a complete loss of power to the wheels. Heres a breakdown of how this can vary by manufacturer or vehicle:
Porsche
– Porsche Models: If you have a Porsche, the transmission is critical for performance. It`s best to avoid driving until the issue is fixed, as it can lead to more serious transmission damage.
Mini
– Mini Models: Similar to Porsche, driving with this code can lead to erratic shifting. Its advisable to get it checked out quickly to avoid further issues.
Mercedes
– Mercedes Models: Mercedes vehicles often have advanced transmission systems. A P0985 code can lead to limp mode, where the car limits speed and performance. It`s safer to get it diagnosed and repaired.
Audi
– Audi Models: Audi transmissions are complex, and a malfunction can affect drivability. Its recommended to have the vehicle inspected to prevent potential damage.
Jaguar
– Jaguar Models: Jaguars are known for their luxury and performance. A transmission issue can lead to a loss of power and should be addressed immediately for safety.
Land Rover
– Land Rover Models: Land Rovers often deal with off-road conditions. A malfunctioning transmission can be dangerous, especially in rugged terrains. Its best to have it repaired before driving.
General Advice
Regardless of the make, if you see a P0985 code:
– Do Not Ignore It: Continuing to drive can worsen the problem.
– Get It Checked: Have a mechanic diagnose the issue as soon as possible.
– Consider Towing: If the vehicle is not shifting correctly, it might be safer to tow it to a shop rather than drive it.
Our take, it`s best to avoid driving with a P0985 code across all these manufacturers to ensure safety and prevent further damage.
