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AutoCodes – Mercedes-Benz – P0206 Mercedes-Benz

P0206 Mercedes-Benz Code - Injector Circuit/Open Cylinder 6

Quick Answer

This fault code is stored in the Engine Control Module (ECM) when the injector control circuit does not behave as expected. Common causes include Faulty fuel injector 6, Fuel Injector 6 harness is open or shorted, Fuel injector 6 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
P0206 Mercedes-Benz indicates Injector Circuit/Open Cylinder 6.
Common causes
Common causes include Faulty fuel injector 6, Fuel Injector 6 harness is open or shorted, Fuel injector 6 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 10,750
How popular is this code, among other codes? Low
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Table of contents Created and updated by William Orellana on Sep 11, 2019
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Code P0206 Mercedes-Benz Description

This fault code is stored in the Engine Control Module (ECM) when the injector control circuit does not behave as expected. The ECM uses the induced voltage from the injector to indicate that the fuel injector circuit is operating correctly electrically. It does not signal the mechanical condition of the injector. When the ECM opens the ground circuit for an injector (to cease current flow) a voltage is induced into the winding. This voltage shows the electrical integrity of the injector and associated wiring. Absence of this induced voltage results in a fault code being stored in the ECM. This code is generated if the fault is associated with cylinder 6.
OBDII Code P0206 Mercedes-Benz - Injector Circuit/Open Cylinder 6 - AutoCodes.com
P0206 Mercedes-Benz Code - Injector Circuit/Open Cylinder 6
What does this mean?

What are the Possible Causes of the DTC P0206 Mercedes-Benz?

  • Faulty fuel injector 6
  • Fuel Injector 6 harness is open or shorted
  • Fuel injector 6 circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0206 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 does this mean?

Code Tech Notes

Mercedes Benz Code = 0315 The injection valve output stage of cylinder 6 detects a line discontinuity. (P0206)

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0206 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 P0206 Mercedes-Benz code?

Need more information on how to fix the P0206 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0206 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 P0206 Mercedes-Benz Code

1. What does the OBDII code P0206 mean on a Mercedes-Benz?

P0206 indicates an issue with the fuel injector circuit for cylinder 6, such as an open or faulty connection.

2. What are the common symptoms of code P0206 in a Mercedes-Benz?

Symptoms include rough idling, misfires, reduced engine performance, poor fuel efficiency, and the check engine light turning on.

3. What causes the P0206 code to appear in a Mercedes-Benz?

Common causes include a faulty fuel injector, damaged wiring or connectors, a malfunctioning PCM (Powertrain Control Module), or corrosion in the injector circuit.

4. Can I drive my Mercedes-Benz with the P0206 code active?

Driving is possible but not recommended, as it can cause further damage to the engine and lead to poor performance or reduced fuel economy.

5. How do I diagnose the P0206 code on a Mercedes-Benz?

Diagnosis involves inspecting the wiring and connectors for cylinder 6, testing the fuel injector, and checking the PCM for faults.

6. How can I fix the P0206 code on my Mercedes-Benz?

Repairs may include replacing the faulty fuel injector, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming/updating the PCM.

7. How much does it cost to repair a P0206 code on a Mercedes-Benz?

Repair costs vary but typically range from $100 to $300 for a fuel injector replacement, with additional costs for labor or wiring repairs.

8. Can a bad fuel injector cause the P0206 code in a Mercedes-Benz?

Yes, a malfunctioning or clogged fuel injector can trigger the P0206 code by disrupting the injector circuit for cylinder 6.

9. What tools are needed to troubleshoot the P0206 code on a Mercedes-Benz?

You will need an OBDII scanner, a multimeter for electrical tests, and potentially fuel system cleaning tools.

10. How can I prevent the P0206 code from recurring in my Mercedes-Benz?

Regular maintenance, such as inspecting wiring, cleaning fuel injectors, and addressing any fuel system issues promptly, can help prevent this code.

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