AutoCodes – Mercedes-Benz – P0817 Mercedes-Benz

P0817 Mercedes-Benz Code - Starter Disable Circuit

Quick Answer

The Transmission Control Module (TCM) monitors the Starter Disable Circuit signal. Common causes include Faulty Starter Relay, Starter Relay harness is open or shorted, Starter Relay 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: P0817 Mercedes-Benz indicates Starter Disable Circuit.
Common causes: Common causes include Faulty Starter Relay, Starter Relay harness is open or shorted, Starter Relay 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 5,174

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 P0817 Mercedes-Benz Description

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

OBDII Code P0817 Mercedes-Benz - Starter Disable Circuit - AutoCodes.com — P0817 Mercedes-Benz Code - Starter Disable Circuit

What does this mean?

What are the Possible Causes of the DTC P0817 Mercedes-Benz?

Faulty Starter Relay
Starter Relay harness is open or shorted
Starter Relay circuit poor electrical connection

How to Fix the DTC P0817 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 P0817 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 P0817 Mercedes-Benz code?

Need more information on how to fix the P0817 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0817 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 P0817 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0817 in a Mercedes-Benz related to the Starter Disable Circuit?

- Common symptoms include the vehicle not starting, the engine not cranking, or the ignition key not turning.

2. What could cause the OBDII code P0817 related to the Starter Disable Circuit in a Mercedes-Benz?

- The code P0817 can be triggered by issues such as a faulty starter relay, damaged wiring in the starter circuit, or a malfunctioning ignition switch.

3. How can I diagnose the OBDII code P0817 in my Mercedes-Benz related to the Starter Disable Circuit?

- To diagnose the issue, you can perform a visual inspection of the starter circuit, check the starter relay, test the ignition switch, and use a scan tool to read the code and identify the specific problem.

4. Can I still drive my Mercedes-Benz with the OBDII code P0817 related to the Starter Disable Circuit?

- It is not recommended to drive the vehicle with this code, as it may prevent the engine from starting, leaving you stranded.

5. What are some repair tips for fixing the OBDII code P0817 in a Mercedes-Benz associated with the Starter Disable Circuit?

- Repair tips include checking and replacing the starter relay, inspecting and repairing any damaged wiring, and testing and possibly replacing the ignition switch.

6. Is it possible to clear the OBDII code P0817 related to the Starter Disable Circuit in a Mercedes-Benz without fixing the issue?

- Clearing the code without fixing the underlying problem may temporarily turn off the check engine light, but the issue will persist and the code is likely to return.

7. How much does it typically cost to repair the OBDII code P0817 in a Mercedes-Benz linked to the Starter Disable Circuit?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $500 for parts and labor.

8. Can a DIY enthusiast fix the OBDII code P0817 related to the Starter Disable Circuit in a Mercedes-Benz?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair the issue themselves, especially if it involves simple tasks like replacing a relay or checking wiring.

9. Will the OBDII code P0817 in a Mercedes-Benz reset itself after the issue is fixed?

- Once the underlying problem causing the code is repaired, the code can be cleared using a scan tool, and it should not reappear if the issue is successfully resolved.

10. Are there any recalls or technical service bulletins related to the OBDII code P0817 in Mercedes-Benz vehicles concerning the Starter Disable Circuit?

- It is recommended to check with a Mercedes-Benz dealership or online resources for any relevant recalls or technical service bulletins related to this specific OBDII code and issue.