AutoCodes – Mercedes-Benz – P0200 Mercedes-Benz

P0200 Mercedes-Benz Code - Injector Circuit Malfunction

Quick Answer

Engine Control Module (ECM) checks the injectors circuit resistance and monitors the voltage drop during normal operation. Common causes include Fuel Injector harness is open or shorted, Fuel injector circuit poor electrical connection, Faulty fuel injector. 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: P0200 Mercedes-Benz indicates Injector Circuit Malfunction.
Common causes: Common causes include Fuel Injector harness is open or shorted, Fuel injector circuit poor electrical connection, Faulty fuel injector.
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 16,891

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 P0200 Mercedes-Benz Description

Engine Control Module (ECM) checks the injectors circuit resistance and monitors the voltage drop during normal operation. The ECM will trigger the P0200 code when the resistance or voltage drop at the injectors is out of specifications.

OBDII Code P0200 Mercedes-Benz - Injector Circuit Malfunction - AutoCodes.com — P0200 Mercedes-Benz Code - Injector Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0200 Mercedes-Benz?

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

How to Fix the DTC P0200 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 P0200 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 P0200 Mercedes-Benz code?

Need more information on how to fix the P0200 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0200 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 P0200 Mercedes-Benz Code

1. What does the OBDII code P0200 mean on a Mercedes-Benz?

P0200 indicates an issue with the fuel injector circuit, where the Engine Control Module (ECM) detects a malfunction in the electrical circuit controlling one or more fuel injectors.

2. What are the common symptoms of a P0200 code on a Mercedes-Benz?

Symptoms may include poor engine performance, rough idling, misfires, reduced fuel efficiency, difficulty starting, or the Check Engine Light illuminating.

3. What causes the P0200 code to appear on a Mercedes-Benz?

Common causes include faulty fuel injectors, damaged wiring or connectors in the injector circuit, a malfunctioning ECM, or issues with the power supply to the injectors.

4. Can I still drive my Mercedes-Benz with a P0200 code?

Driving with a P0200 code is not recommended, as it may result in poor engine performance, increased emissions, and potential damage to the engine or catalytic converter.

5. How do I diagnose a P0200 code on my Mercedes-Benz?

Diagnosis typically involves inspecting the injector wiring and connectors for damage, testing the fuel injectors, and using a scan tool to monitor injector circuit activity.

6. How can a faulty fuel injector cause the P0200 code on a Mercedes-Benz?

A faulty injector can disrupt the electrical circuit, leading to improper fuel delivery and triggering the ECM to log the P0200 code.

7. What tools are needed to diagnose and repair a P0200 code on a Mercedes-Benz?

Tools may include an OBDII scanner, a multimeter for testing voltage and continuity, and possibly a noid light to check injector pulse signals.

8. How much does it cost to fix a P0200 code on a Mercedes-Benz?

Repair costs vary depending on the cause, ranging from $100 for a simple wiring fix to over $500 for injector replacement or ECM repairs.

9. Can a dirty fuel injector cause the P0200 code on a Mercedes-Benz?

While unlikely, a severely clogged injector might cause electrical irregularities or mechanical issues that could trigger the code.

10. What preventive maintenance can help avoid a P0200 code on a Mercedes-Benz?

Regularly inspect injector wiring and connectors, use high-quality fuel, and follow recommended maintenance schedules to keep the fuel system clean and functional.