AutoCodes – BMW – P0268 BMW

P0268 BMW Code - Cylinder 3 Fuel Injector 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 3, Faulty Fuel Injector 3, Plugged Fuel Injector 3. 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: P0268 BMW indicates Cylinder 3 Fuel Injector Circuit High.
Common causes: Common causes include Dirty Fuel Injector 3, Faulty Fuel Injector 3, Plugged Fuel Injector 3.
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 5,407

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 P0268 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 P0268 BMW - Cylinder 3 Fuel Injector Circuit High - AutoCodes.com — P0268 BMW Code - Cylinder 3 Fuel Injector Circuit High

What does this mean?

What are the Possible Causes of the DTC P0268 BMW?

Dirty Fuel Injector 3
Faulty Fuel Injector 3
Plugged Fuel Injector 3
Fuel Injector #3 harness is open or shorted
Fuel Injector #3 circuit poor electrical connection

How to Fix the DTC P0268 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 P0268 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.

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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 P0268 BMW Code

1. What does the OBDII code P0268 mean on a BMW?

P0268 indicates a "Cylinder 3 Fuel Injector Circuit High," meaning there is a problem with the electrical circuit controlling the fuel injector on cylinder 3.

2. What are the common symptoms of code P0268 in a BMW?

Common symptoms include rough idling, engine misfires, decreased fuel efficiency, poor acceleration, and the check engine light being illuminated.

3. What causes the P0268 code in a BMW?

The code can be triggered by a faulty fuel injector, damaged wiring or connectors in the injector circuit, a malfunctioning engine control module (ECM), or high resistance in the circuit.

4. Can I drive my BMW with the P0268 code active?

Driving with the P0268 code is not recommended as it can cause poor performance, potential engine damage, and increased emissions.

5. How is the P0268 code diagnosed in a BMW?

A technician will use a scan tool to confirm the code, inspect the wiring and connectors for damage, test the fuel injector for proper resistance, and check the ECM for faults.

6. How do you fix the P0268 code on a BMW?

Repairs may include replacing the faulty fuel injector, repairing or replacing damaged wiring or connectors, or reprogramming/replacing the ECM if necessary.

7. What tools are needed to troubleshoot the P0268 code?

Tools like an OBDII scanner, multimeter, and possibly an oscilloscope are typically used to diagnose and fix this issue.

8. How much does it cost to fix the P0268 code on a BMW?

Repair costs vary depending on the issue but typically range from $100 for wiring repairs to $500 or more for replacing a fuel injector or ECM.

9. Can a clogged fuel injector cause the P0268 code?

No, a clogged injector usually causes different codes. P0268 specifically refers to an electrical issue in the injector circuit.

10. What should I check first when troubleshooting the P0268 code?

Start by inspecting the wiring and connectors for cylinder 3's fuel injector for visible damage or corrosion. Then test the injector's resistance with a multimeter.