AutoCodes – BMW – P3159 BMW

P3159 BMW Code - Cylinder 4 High-Pressure Fuel Injector High Side Circuit High

Quick Answer

The solenoid-controlled injection valve discharges a high-pressure spray into the combustion chamber. Common causes include Faulty Fuel Injector 4, Fuel Injector 4 harness is open or shorted, Fuel Injector 4 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: P3159 BMW indicates Cylinder 4 High-Pressure Fuel Injector High Side Circuit High.
Common causes: Common causes include Faulty Fuel Injector 4, Fuel Injector 4 harness is open or shorted, Fuel Injector 4 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 1,308

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 Jul 16, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P3159 BMW Description

The solenoid-controlled injection valve discharges a high-pressure spray into the combustion chamber. The solenoid-controlled injection valve is a retracting-plunger valve characterized by a high level of flexibility in its spray-propagation pattern (angle and shape). The discharge orifices form the high-precision injection pattern. This provides even and consistent propagation. The retracting-plunger solenoid-controlled injection valve continues to maintain stable propagation properties, even at the temperatures and pressure levels encountered within the combustion chamber. Fuel is injected into the combustion chambers under high pressure (between 50 and 200 bar) during the intake and compression strokes. During the warm-up phase yet another, a minute quantity of fuel is injected to assist the catalytic converter to reach its effective operating temperature more quickly (catalytic converter heating). During cold starting, the fuel is sprayed during the compression stroke in multiple pulses. This strategy provides reliable cold-starts along with substantive improvements in the areas of pollutant emissions and fuel consumption.
The Digital Motor Electronics (DME) diagnosis monitors the activation of the high voltage side of the fuel injector. The Diagnostic Trouble Code (DTC) is detected when there is a short circuit to B+.

OBDII Code P3159 BMW - Cylinder 4 High-Pressure Fuel Injector High Side Circuit High - AutoCodes.com — P3159 BMW Code - Cylinder 4 High-Pressure Fuel Injector High Side Circuit High

What does this mean?

What are the Possible Causes of the DTC P3159 BMW?

Faulty Fuel Injector 4
Fuel Injector 4 harness is open or shorted
Fuel Injector 4 circuit poor electrical connection
Faulty Digital Motor Electronics (DME)

How to Fix the DTC P3159 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

BMW Diagnostic Trouble Code (DTC): 110404

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P3159 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 P3159 BMW Code

1. What are the common symptoms of OBDII code P3159 in a BMW related to Cylinder 4 High-Pressure Fuel Injector High Side Circuit High?

The common symptoms of this code may include rough idling, engine misfires, decreased fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P3159 related to the high-pressure fuel injector in Cylinder 4 of a BMW?

Potential causes of this code may include a faulty high-pressure fuel injector, a wiring issue in the high side circuit, an open or short in the circuit, or a problem with the Engine Control Module (ECM).

3. How can I diagnose OBDII code P3159 in a BMW Cylinder 4 high-pressure fuel injector circuit?

Diagnosing this code typically involves using a scan tool to read the code, checking the wiring and connectors for any damage, testing the high-pressure fuel injector, and inspecting the ECM for faults.

4. What are some repair tips for resolving OBDII code P3159 in a BMW Cylinder 4 high-pressure fuel injector circuit?

Repair tips may include replacing the faulty high-pressure fuel injector, repairing any damaged wiring or connectors, clearing the code with a scan tool after repairs, and performing a test drive to ensure the issue is resolved.

5. Can I drive my BMW with OBDII code P3159 related to Cylinder 4 high-pressure fuel injector circuit high?

It is not recommended to drive your BMW with this code present, as it can lead to potential engine damage or further issues. It's best to address the problem promptly.

6. Is OBDII code P3159 in a BMW a serious issue?

While not an immediate emergency, this code should be addressed to prevent potential engine performance issues and ensure optimal fuel efficiency.

7. How much does it typically cost to repair OBDII code P3159 in a BMW related to the high-pressure fuel injector circuit?

The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

8. Can a DIY enthusiast fix OBDII code P3159 in a BMW Cylinder 4 high-pressure fuel injector circuit?

While some DIY enthusiasts may be able to diagnose and repair this issue, it's recommended to consult a professional mechanic with experience in handling high-pressure fuel systems for the most accurate and safe repair.

9. Will OBDII code P3159 reset on its own after repairs are made in a BMW?

In most cases, the code will need to be manually cleared using a scan tool after repairs are completed to reset the check engine light and ensure the issue is fully resolved.

10. How can I prevent OBDII code P3159 in a BMW Cylinder 4 high-pressure fuel injector circuit in the future?

Regular maintenance, such as fuel injector cleaning, using high-quality fuel, and addressing any engine performance issues promptly, can help prevent the recurrence of this code in the future.