AutoCodes – Mercedes-Benz – P0265 Mercedes-Benz

P0265 Mercedes-Benz Code - Cylinder 2 Injector 'A' Circuit High

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 Dirty Fuel Injector 2, Faulty Fuel Injector 2, Plugged Fuel Injector 2. 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: P0265 Mercedes-Benz indicates Cylinder 2 Injector 'A' Circuit High.
Common causes: Common causes include Dirty Fuel Injector 2, Faulty Fuel Injector 2, Plugged Fuel Injector 2.
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 4,753

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 02, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0265 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.

OBDII Code P0265 Mercedes-Benz - Cylinder 2 Injector 'A' Circuit High - AutoCodes.com — P0265 Mercedes-Benz Code - Cylinder 2 Injector 'A' Circuit High

What does this mean?

What are the Possible Causes of the DTC P0265 Mercedes-Benz?

Dirty Fuel Injector 2
Faulty Fuel Injector 2
Plugged Fuel Injector 2
Fuel Injector #2 harness is open or shorted
Fuel Injector #2 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0265 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 = 0317 The injection valve output stage of cylinder 2 detects a short circuit to positive. (P0265)

Clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0265 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 P0265 Mercedes-Benz code?

Need more information on how to fix the P0265 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0265 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 P0265 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0265 in a Mercedes-Benz?

- Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and potential stalling of the vehicle.

2. What causes the OBDII code P0265 to trigger in a Mercedes-Benz?

- The code P0265 is typically triggered when there is a high voltage condition detected in the fuel injector circuit of cylinder 2 in a Mercedes-Benz.

3. How can I diagnose the OBDII code P0265 in my Mercedes-Benz?

- Diagnosing the code P0265 involves checking the wiring and connectors related to the fuel injector of cylinder 2, as well as testing the fuel injector itself for proper functioning.

4. Can a dirty fuel injector cause the OBDII code P0265 in a Mercedes-Benz?

- Yes, a dirty or clogged fuel injector can disrupt the proper functioning of the injector circuit, leading to a high voltage condition and triggering the code P0265.

5. What are some repair tips for fixing the OBDII code P0265 in a Mercedes-Benz?

- Repair tips include cleaning or replacing the fuel injector of cylinder 2, checking and repairing any damaged wiring or connectors, and resetting the fault code after repairs are completed.

6. Is it safe to continue driving my Mercedes-Benz with the OBDII code P0265 present?

- It is not recommended to continue driving the vehicle with the code P0265 present, as it can lead to potential engine performance issues and further damage if left unresolved.

7. Can a faulty engine control module (ECM) cause the OBDII code P0265 in a Mercedes-Benz?

- Yes, a faulty ECM can sometimes cause irregular voltage signals to be sent to the fuel injector of cylinder 2, triggering the code P0265.

8. How much does it typically cost to repair the OBDII code P0265 in a Mercedes-Benz?

- The cost of repairing the code P0265 can vary depending on the exact cause of the issue, but it may range from $200 to $500 for parts and labor.

9. Are there any preventive measures to avoid the OBDII code P0265 in a Mercedes-Benz?

- Regular maintenance, such as using quality fuel and injector cleaners, can help prevent issues with fuel injectors and potentially avoid triggering the code P0265.

10. Can a mechanic clear the OBDII code P0265 without fixing the underlying issue?

- While a mechanic can clear the code temporarily, it is crucial to address and fix the underlying issue causing the code P0265 to prevent further problems and potential damage to the vehicle.