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Engine Fault Code P0853

Drive Switch Input Circuit

Care Engine Code Reader
The Engine Fault Code P0853 refers to a problem with the drive switch input circuit. This code is generally associated with vehicles that have a transmission control system. The drive switch is often linked to the gear selector, indicating whether the vehicle is in park, reverse, neutral, or drive. When the system detects a fault in this circuit, it triggers the P0853 code.

Common Causes:
1. Faulty Drive Switch: The switch itself may be defective.
2. Wiring Issues: Damaged or corroded wiring or connectors can cause problems.
3. Transmission Control Module (TCM) Issues: The module that controls the transmission could be malfunctioning.
4. Faulty Transmission: Problems within the transmission can also trigger this code.

Manufacturer-Specific Meanings:
While P0853 generally indicates a drive switch issue, the exact meaning can vary slightly between manufacturers. Here are a few examples:

1. Porsche: Similar to the general meaning, indicating a fault in the drive switch circuit, often related to the transmission.
2. Mini: May also refer to issues with the electronic gear selector or related wiring.
3. Mercedes-Benz: Typically indicates a malfunction in the drive position switch, affecting the transmission`s operation.
4. Audi: Similar to Mercedes, it often indicates a problem with the gear selector input.
5. Jaguar: May refer to a fault in the transmission control system related to the drive switch.
6. Land Rover: Often indicates issues with the gear selector or related wiring, affecting the vehicle`s ability to determine its gear position.

What to Do:
If you encounter this code, it`s best to:
1. Check the drive switch for faults.
2. Inspect wiring and connectors for damage.
3. Use a diagnostic tool to clear the code and see if it returns.
4. If the issue persists, consider consulting a professional mechanic for further diagnosis.

Understanding this code can help you troubleshoot issues with your vehicle`s transmission system effectively.
The Engine Fault Code P0853 refers to an issue with the drive switch input circuit. This code is common in various vehicles, including European brands like Porsche, Mini, Mercedes, Audi, Jaguar, and Land Rover. Here are some potential causes that can vary by manufacturer:

1. Faulty Drive Switch: The drive switch itself may be malfunctioning. This switch is responsible for indicating the selected gear or drive mode.

2. Wiring Issues: Damaged or corroded wiring in the drive switch circuit can lead to poor connections, causing the code to trigger.

3. Faulty Transmission Control Module (TCM): In some vehicles, a failing TCM can misinterpret signals from the drive switch, resulting in this code.

4. Bad Ground Connection: A poor ground connection can affect the electrical circuit, leading to incorrect signals being sent.

5. Software Issues: Some vehicles may require a software update to fix bugs related to the drive switch input circuit.

6. Transmission Issues: Problems within the transmission itself, such as internal faults, can also trigger this code.

7. Manufacturer-Specific Variations: Each manufacturer might have unique components or systems that could influence the cause of this code. For example:
Porsche: May have specific issues related to their PDK transmission system.
Mini: Could have different wiring harness layouts that affect the drive switch.
Mercedes: Might involve more complex electronic systems that require specialized diagnostics.
Audi: Could have unique software calibration needs.
– Jaguar and Land Rover: Often have advanced electrical systems that can complicate diagnostics.

When troubleshooting this code, its essential to consider the specific vehicle and its systems. Always refer to the vehicle`s service manual for detailed diagnostic procedures and specifications.
The Engine Fault Code P0853 refers to an issue with the drive switch input circuit. This code can appear in several European car brands, and while the basic troubleshooting steps may be similar, there can be some differences based on the manufacturer. Here are general steps to diagnose and fix this code, along with specific notes for Porsche, Mini, Mercedes, Audi, Jaguar, and Land Rover.

General Steps to Fix P0853:

1. Check the Owner`s Manual: Look for any specific notes regarding the drive switch or transmission settings.

2. Inspect the Drive Switch:
– Locate the drive switch (often found near the gear shifter).
– Check for physical damage or wear.

3. Test the Wiring and Connectors:
– Inspect the wiring harness connected to the drive switch for frays, corrosion, or disconnections.
– Use a multimeter to check for continuity in the wiring.

4. Scan for Other Codes:
– Use an OBD-II scanner to check for other related codes that might give more context to the issue.

5. Clear the Code:
– After inspecting and fixing any issues, clear the code and see if it returns after a test drive.

6. Replace the Drive Switch:
– If the switch is faulty, replacing it may resolve the issue.

Manufacturer-Specific Notes:

#Porsche:
– Check the specific model as some may have unique drive switch designs.
– Ensure that the transmission fluid is at the correct level, as low fluid can sometimes trigger faults.

#Mini:
– The drive switch might be integrated with the gear selector module. If so, replacing the entire module may be necessary.
– Check for software updates that may affect the transmission control module.

#Mercedes:
– Mercedes vehicles often have complex wiring. Use the manufacturers wiring diagrams to ensure proper connections and test points.
– Consider resetting the transmission adaptation after repairs, as this can help in relearning the shift patterns.

#Audi:
– Audi models may have a drive-by-wire system; ensure the throttle body and related sensors are functioning correctly.
– Look for issues with the transmission control module (TCM) if the problem persists.

#Jaguar:
– Jaguars may have specific software requirements; ensure that the TCM is updated.
– Check for any recalls or service bulletins that might relate to the drive switch.

#Land Rover:
– Land Rover vehicles often have a more robust diagnostic system. Use a specialized scanner to read all modules.
– Inspect the transfer case if applicable, as issues there can sometimes trigger P0853.


If after all these steps the code persists, it may be best to consult a professional mechanic or a dealership, especially for complex wiring or module issues. Each vehicle may have unique considerations, so always refer to the specific repair manual for your model for the most accurate guidance.
Driving with a P0853 code, which relates to the Drive Switch Input Circuit, is not recommended. This code usually indicates an issue with the transmission range sensor or the drive switch. Heres a breakdown of what it means and how it can affect different vehicles:

General Impact of P0853:
1. Transmission Issues: The P0853 code can lead to transmission problems, such as difficulty shifting gears or the vehicle getting stuck in a specific gear.
2. Safety Concerns: If the vehicle cannot determine the correct gear, it might not shift properly, which could cause unsafe driving conditions.
3. Check Engine Light: The check engine light may be illuminated, indicating a need for immediate attention.

Manufacturer-Specific Considerations:
Porsche: For Porsche models, the P0853 code can affect the Tiptronic transmission. Driving may be possible, but it could lead to performance issues.
Mini: In Mini vehicles, this code may cause the car to go into `limp mode,` limiting speed and power. It`s best to have it checked soon.
Mercedes: Mercedes-Benz cars can experience harsh shifting or no shifting at all. It`s safer to avoid driving until the issue is resolved.
Audi: In Audis, the code can trigger transmission malfunctions. Driving with this code can lead to further damage.
Jaguar: Jaguars may also enter a limited performance mode. It`s advisable to address the issue promptly.
Land Rover: For Land Rovers, this code can lead to erratic shifting. It`s best to have it diagnosed before driving.


While some vehicles may still allow you to drive with a P0853 code, it is generally unsafe and could lead to more serious problems. Its best to have a qualified mechanic diagnose and fix the issue as soon as possible. Always prioritize safety and vehicle performance.

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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