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AutoCodes – BMW – P0261 BMW

P0261 BMW Code - Cylinder 1 Fuel Injector Circuit Low

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 1, Faulty Fuel Injector 1, Plugged Fuel Injector 1. 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
P0261 BMW indicates Cylinder 1 Fuel Injector Circuit Low.
Common causes
Common causes include Dirty Fuel Injector 1, Faulty Fuel Injector 1, Plugged Fuel Injector 1.
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 16,843
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Jun 02, 2022
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Code P0261 BMW 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 P0261 BMW - Cylinder 1 Fuel Injector Circuit Low - AutoCodes.com
P0261 BMW Code - Cylinder 1 Fuel Injector Circuit Low
What does this mean?

What are the Possible Causes of the DTC P0261 BMW?

  • Dirty Fuel Injector 1
  • Faulty Fuel Injector 1
  • Plugged Fuel Injector 1
  • Fuel Injector #1 harness is open or shorted
  • Fuel Injector #1 circuit poor electrical connection

How to Fix the DTC P0261 BMW?

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

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 P0261 BMW 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 P0261 BMW code?

Need more information on how to fix the P0261 BMW code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0261 BMW 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 P0261 BMW Code

1. What does the OBDII code P0261 mean on a BMW?

P0261 indicates that the fuel injector circuit for cylinder 1 is experiencing low voltage or an electrical fault.

2. What are the symptoms of the P0261 code on a BMW?

Common symptoms include rough idling, engine misfires, reduced fuel efficiency, poor acceleration, and an illuminated check engine light.

3. What causes the P0261 code on a BMW?

The most common causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a failing engine control module (ECM), or low system voltage.

4. Can you drive a BMW with the P0261 code?

While it may still be drivable, continuing to drive with this code can cause further engine damage and reduce performance. It’s best to address the issue promptly.

5. How do you diagnose the P0261 code on a BMW?

Diagnosis typically involves visually inspecting the wiring and connectors for cylinder 1’s fuel injector, testing the injector with a multimeter, and using a scan tool to monitor injector data.

6. How do you fix the P0261 code on a BMW?

Repairs may involve replacing the faulty fuel injector, repairing damaged wiring or connectors, cleaning the injector, or replacing the ECM if it’s defective.

7. Can a clogged fuel injector cause the P0261 code?

Yes, a clogged or dirty fuel injector can cause electrical resistance issues, leading to this code.

8. What tools are needed to troubleshoot the P0261 code on a BMW?

You’ll need a diagnostic scan tool, a multimeter, and possibly an oscilloscope to test the injector circuit and pinpoint the fault.

9. How much does it cost to fix the P0261 code on a BMW?

Repair costs can range from $150 to $500, depending on whether you need to replace a fuel injector, repair wiring, or address ECM issues.

10. Can a weak battery trigger the P0261 code on a BMW?

Yes, a weak or failing battery can cause low voltage in the fuel injector circuit, potentially triggering this code.

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