AutoCodes – Mercedes-Benz – P0208 Mercedes-Benz

P0208 Mercedes-Benz Code - Injector Circuit/Open Cylinder 8

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 8, Fuel Injector 8 harness is open or shorted, Fuel injector 8 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: P0208 Mercedes-Benz indicates Injector Circuit/Open Cylinder 8.
Common causes: Common causes include Faulty fuel injector 8, Fuel Injector 8 harness is open or shorted, Fuel injector 8 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 13,644

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 Sep 11, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0208 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 8.

OBDII Code P0208 Mercedes-Benz - Injector Circuit/Open Cylinder 8 - AutoCodes.com — P0208 Mercedes-Benz Code - Injector Circuit/Open Cylinder 8

What does this mean?

What are the Possible Causes of the DTC P0208 Mercedes-Benz?

Faulty fuel injector 8
Fuel Injector 8 harness is open or shorted
Fuel injector 8 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0208 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 P0208 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 P0208 Mercedes-Benz code?

Need more information on how to fix the P0208 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0208 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 P0208 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0208 (Injector Circuit/Open Cylinder 8) in a Mercedes-Benz?

- Common symptoms include engine misfires, rough idling, decreased fuel efficiency, and potentially a check engine light.

2. What are the possible causes of OBDII code P0208 in a Mercedes-Benz?

- The code P0208 typically indicates an issue with the fuel injector circuit in cylinder 8, which could be caused by a faulty injector, wiring problems, or an ECM (Engine Control Module) issue.

3. How can I diagnose the cause of OBDII code P0208 in my Mercedes-Benz?

- Diagnosing the code involves checking the injector in cylinder 8 for proper operation, inspecting the wiring for any damage or loose connections, and using a scan tool to analyze the ECM data.

4. Can a DIY enthusiast repair OBDII code P0208 in a Mercedes-Benz?

- While some basic checks like inspecting wiring connections can be done by a DIY enthusiast, diagnosing and repairing the root cause of the code may require professional equipment and expertise.

5. Is it safe to drive my Mercedes-Benz with OBDII code P0208 (Injector Circuit/Open Cylinder 8) present?

- It is not recommended to drive your vehicle with code P0208 as it can lead to engine performance issues and potential damage if not addressed promptly.

6. How much does it typically cost to repair OBDII code P0208 in a Mercedes-Benz?

- The cost of repairing code P0208 can vary depending on the specific cause, but it may involve replacing a faulty injector, repairing wiring issues, or reprogramming the ECM, leading to potentially significant repair costs.

7. Are there any preventive maintenance tips to avoid OBDII code P0208 in a Mercedes-Benz?

- Regularly servicing your vehicle, using high-quality fuel, and addressing any engine performance issues promptly can help prevent injector circuit problems that trigger code P0208.

8. Can a Mercedes-Benz continue to run with a single injector malfunctioning in cylinder 8?

- While the vehicle may still run with a single injector malfunctioning in cylinder 8, it will likely experience reduced performance, fuel efficiency, and potential long-term engine damage if not addressed promptly.

9. How long does it take to repair OBDII code P0208 in a Mercedes-Benz at a professional automotive service center?

- The repair time for code P0208 can vary based on the specific cause and the availability of parts, but it typically takes a few hours to a full day to diagnose and repair the issue.

10. Will resetting the check engine light resolve OBDII code P0208 in a Mercedes-Benz?

- Resetting the check engine light will only clear the code temporarily, and the underlying issue causing code P0208 will need to be diagnosed and repaired to prevent the light from coming back on.