AutoCodes – Mercedes-Benz – P0813 Mercedes-Benz

P0813 Mercedes-Benz Code - Reverse Output Circuit

Quick Answer

The Transmission Control Module (TCM) monitors the Reverse Output signal. Common causes include Faulty Reverse Input Switch, Reverse Input Switch harness is open or shorted, Reverse Input Switch 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: P0813 Mercedes-Benz indicates Reverse Output Circuit.
Common causes: Common causes include Faulty Reverse Input Switch, Reverse Input Switch harness is open or shorted, Reverse Input Switch 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 2,320

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 P0813 Mercedes-Benz Description

The Transmission Control Module (TCM) monitors the Reverse Output signal. The TCM sets the OBDII code when the Reverse Output is not to factory specifications.

OBDII Code P0813 Mercedes-Benz - Reverse Output Circuit - AutoCodes.com — P0813 Mercedes-Benz Code - Reverse Output Circuit

What does this mean?

What are the Possible Causes of the DTC P0813 Mercedes-Benz?

Faulty Reverse Input Switch
Reverse Input Switch harness is open or shorted
Reverse Input Switch circuit poor electrical connection

How to Fix the DTC P0813 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 P0813 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 P0813 Mercedes-Benz code?

Need more information on how to fix the P0813 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0813 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 P0813 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0813 in a Mercedes-Benz related to the Reverse Output Circuit?

The common symptoms include issues with engaging or disengaging the reverse gear, difficulty shifting into reverse, and the inability to move the vehicle backward.

2. What are the possible causes of OBDII code P0813 in a Mercedes-Benz?

The code P0813 typically indicates a problem with the reverse output circuit, which can be caused by a faulty transmission range sensor, damaged wiring or connectors, or a malfunctioning transmission control module.

3. How can I diagnose the OBDII code P0813 in my Mercedes-Benz?

Diagnosing the code P0813 involves using a diagnostic scanner to retrieve the fault codes, checking the wiring and connectors related to the reverse output circuit, and testing the transmission range sensor for proper operation.

4. Can I continue driving my Mercedes-Benz with OBDII code P0813 present?

It is not recommended to continue driving your Mercedes-Benz with the code P0813 present, as it can lead to further transmission issues and potential safety hazards. It's best to address the problem promptly.

5. What are some repair tips for fixing OBDII code P0813 in a Mercedes-Benz?

Repair tips for resolving the code P0813 include checking and repairing any damaged wiring or connectors, replacing the transmission range sensor if faulty, and ensuring proper communication between the transmission control module and other related components.

6. How much does it typically cost to repair OBDII code P0813 in a Mercedes-Benz?

The cost of repairing OBDII code P0813 in a Mercedes-Benz can vary depending on the specific cause of the issue, the extent of the repairs needed, and the labor rates of the repair shop. It's advisable to get a diagnostic and repair estimate from a qualified mechanic.

7. Can a DIY enthusiast fix OBDII code P0813 in a Mercedes-Benz?

While some DIY enthusiasts may have the skills to diagnose and repair OBDII code P0813, it's recommended to consult a professional mechanic or technician with experience in Mercedes-Benz vehicles to ensure the problem is properly addressed.

8. Are there any preventive measures to avoid OBDII code P0813 in a Mercedes-Benz?

Regular maintenance of your Mercedes-Benz, including checking the transmission system for any signs of wear or damage, can help prevent issues like OBDII code P0813. Additionally, addressing any transmission-related symptoms promptly can prevent further damage.

9. How long does it take to repair OBDII code P0813 in a Mercedes-Benz?

The repair time for OBDII code P0813 in a Mercedes-Benz can vary depending on the complexity of the issue, the availability of parts, and the shop's workload. It's best to consult with the mechanic performing the repairs for a more accurate timeframe.

10. Is OBDII code P0813 common in Mercedes-Benz vehicles?

Code P0813 related to the reverse output circuit is not extremely common in Mercedes-Benz vehicles, but it can occur due to various factors such as wear and tear, electrical issues, or component failure. Regular maintenance and prompt repairs can help prevent this code from appearing.