AutoCodes – Mercedes-Benz – P0820 Mercedes-Benz

P0820 Mercedes-Benz Code - Gear Lever X-Y Position Sensor Circuit

Quick Answer

The Transmission Control Module (TCM) monitors the Gear Lever X-Y Position Sensor signal. Common causes include Faulty Gear Lever X-Y Position Sensor, Gear Lever X-Y Position Sensor harness is open or shorted, Gear Lever X-Y Position Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0820 Mercedes-Benz indicates Gear Lever X-Y Position Sensor Circuit.
Common causes: Common causes include Faulty Gear Lever X-Y Position Sensor, Gear Lever X-Y Position Sensor harness is open or shorted, Gear Lever X-Y Position Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 10,316

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0820 Mercedes-Benz Description

The Transmission Control Module (TCM) monitors the Gear Lever X-Y Position Sensor signal. The TCM sets the OBDII code when the Gear Lever X-Y Position Sensor is not to factory specifications.

OBDII Code P0820 Mercedes-Benz - Gear Lever X-Y Position Sensor Circuit - AutoCodes.com — P0820 Mercedes-Benz Code - Gear Lever X-Y Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P0820 Mercedes-Benz?

Faulty Gear Lever X-Y Position Sensor
Gear Lever X-Y Position Sensor harness is open or shorted
Gear Lever X-Y Position Sensor circuit poor electrical connection

How to Fix the DTC P0820 Mercedes-Benz?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0820 Mercedes-Benz code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0820 Mercedes-Benz code?

Need more information on how to fix the P0820 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0820 Mercedes-Benz code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0820 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0820 in a Mercedes-Benz related to the Gear Lever X-Y Position Sensor Circuit?

- Common symptoms include difficulty shifting gears, incorrect gear display on the dashboard, and the inability to start the vehicle.

2. What are the possible causes of OBDII code P0820 in a Mercedes-Benz?

- The code P0820 can be caused by a faulty gear lever position sensor, damaged wiring or connectors in the circuit, or issues with the transmission control module.

3. How can I diagnose the Gear Lever X-Y Position Sensor Circuit issue causing OBDII code P0820 in my Mercedes-Benz?

- Proper diagnosis involves using a scan tool to retrieve the OBDII code, inspecting the gear lever position sensor and related wiring for damage, and testing the sensor's resistance values.

4. Can I drive my Mercedes-Benz with OBDII code P0820 present?

- It is not recommended to drive your vehicle with code P0820 present as it can lead to further transmission problems and potentially leave you stranded.

5. How can I repair OBDII code P0820 in my Mercedes-Benz Gear Lever X-Y Position Sensor Circuit?

- Repair options include replacing the gear lever position sensor, repairing or replacing damaged wiring, and resetting the transmission control module.

6. Will resetting the OBDII code P0820 in my Mercedes-Benz make the problem go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to return.

7. Is it safe to attempt DIY repairs for OBDII code P0820 in a Mercedes-Benz?

- Unless you have experience with automotive electrical systems and diagnostics, it is recommended to have a professional mechanic handle the repairs for code P0820.

8. Can extreme weather conditions affect the Gear Lever X-Y Position Sensor Circuit in a Mercedes-Benz and trigger code P0820?

- Yes, extreme temperature fluctuations or moisture can potentially damage the sensor or wiring, leading to the triggering of OBDII code P0820.

9. How long does it typically take to repair OBDII code P0820 in a Mercedes-Benz at a professional repair shop?

- The repair time can vary depending on the exact cause of the issue, but it may take a few hours to a full day for a mechanic to diagnose and repair the Gear Lever X-Y Position Sensor Circuit problem.

10. Are there any preventive maintenance tips to avoid encountering OBDII code P0820 in a Mercedes-Benz?

- Regularly inspecting the gear lever position sensor, keeping the transmission system well-maintained, and avoiding harsh driving habits can help prevent issues leading to code P0820.