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Engine-Codes – Generic – P2155

P2155 Code - Cylinder 4 Injector High Control Circuit

Quick Answer

The P2155 code indicates a problem with the high control circuit of the fuel injector in cylinder 4 of the vehicle. Common causes include Faulty fuel injector in cylinder 4, Wiring issues in the injector control circuit, Engine control module (ECM) malfunction. 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
P2155 indicates Cylinder 4 Injector High Control Circuit.
Common causes
Common causes include Faulty fuel injector in cylinder 4, Wiring issues in the injector control circuit, Engine control module (ECM) malfunction.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P2155 Description

The P2155 code indicates a problem with the high control circuit of the fuel injector in cylinder 4 of the vehicle. The fuel injector is responsible for delivering the precise amount of fuel into the combustion chamber at the right time to ensure proper engine performance. When the high control circuit in the fuel injector of cylinder 4 malfunctions, it can lead to issues with fuel delivery, which can negatively impact the vehicle's performance.

OBDII Code P2155 - Cylinder 4 Injector High Control Circuit
P2155 Code - Cylinder 4 Injector High Control Circuit

Common Causes of P2155

  1. Faulty fuel injector in cylinder 4
  2. Wiring issues in the injector control circuit
  3. Engine control module (ECM) malfunction
  4. Poor electrical connection to the injector
  5. Fuel delivery system issues

Symptoms of P2155

  1. Check engine light illuminated
  2. Rough engine idle
  3. Engine misfires
  4. Difficulty starting the engine
  5. Engine stalling

How to Fix P2155

  1. Use a diagnostic scanner to retrieve the fault code and identify the specific cause of the issue.
  2. Inspect the wiring and connections in the fuel injector high control circuit for any damage or corrosion.
  3. Test the fuel injector in cylinder 4 to determine if it is functioning correctly.
  4. Replace the faulty fuel injector, repair any wiring issues, or replace the engine control module if necessary.
  5. Clear the fault code from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2155

The cost of repairing the P2155 code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. However, it's essential to keep in mind that the actual cost can be higher or lower based on various factors. It is recommended to obtain quotes from different repair shops to get a more accurate estimate based on your location, vehicle make and model, and engine type.

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Code P2155 Information for Specific Makes

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 P2155 Code

1. What are the common symptoms of OBDII code P2155 (Cylinder 4 Injector High Control Circuit)?

The common symptoms include rough idling, engine misfires, reduced fuel efficiency, and potential stalling of the vehicle.

2. What are the possible causes of OBDII code P2155 (Cylinder 4 Injector High Control Circuit)?

Potential causes include a faulty fuel injector in cylinder 4, wiring issues in the injector circuit, poor electrical connections, or a malfunctioning Engine Control Module (ECM).

3. How can I diagnose OBDII code P2155 (Cylinder 4 Injector High Control Circuit)?

Diagnosis typically involves using an OBDII scanner to retrieve the code, performing a visual inspection of the injector and its wiring, conducting a continuity test on the circuit, and checking the ECM for faults.

4. Can I drive my vehicle with OBDII code P2155 (Cylinder 4 Injector High Control Circuit)?

It is not recommended to drive your vehicle with this code as it can lead to further engine damage and potential safety hazards. It is advised to address the issue promptly.

5. How can I repair OBDII code P2155 (Cylinder 4 Injector High Control Circuit)?

Repair methods may include replacing the faulty fuel injector, repairing or replacing damaged wiring, ensuring proper electrical connections, and resetting the ECM after the issue is fixed.

6. Will OBDII code P2155 (Cylinder 4 Injector High Control Circuit) cause permanent damage to my engine?

Continued driving with this code can potentially cause permanent damage to the engine, especially if the issue leads to severe misfires or fuel delivery problems. Prompt repair is recommended.

7. Can a DIY enthusiast fix OBDII code P2155 (Cylinder 4 Injector High Control Circuit)?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to address this issue by following repair guides and being cautious when working with the fuel system and electrical components.

8. How much does it cost to repair OBDII code P2155 (Cylinder 4 Injector High Control Circuit)?

The cost of repair can vary depending on the exact cause of the issue, the labor rates in your area, and whether you choose to go to a dealership or an independent mechanic. It is advisable to obtain quotes from multiple sources.

9. Can a bad fuel injector cause OBDII code P2155 (Cylinder 4 Injector High Control Circuit)?

Yes, a faulty fuel injector in cylinder 4 can cause this code to appear, as it disrupts the proper fuel delivery to that cylinder, leading to performance issues and triggering the code.

10. How long does it take to repair OBDII code P2155 (Cylinder 4 Injector High Control Circuit)?

The repair time can vary depending on the exact cause of the issue, the availability of parts, and the expertise of the technician. In some cases, it can be resolved within a few hours, while more complex issues may take longer to diagnose and fix.

Discuss the causes and fixes for P2155 OBDII Code

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  • You aren't allowed to fix any component of determining any prices.

    Reply to Comment

  • Diagnosis time is always on a straight time basis ONLY!There is absolutely no way to estimate the actual time to diagnose any problems and especially electrical problems which can be like finding a needle in a haystack.Many problems can be diagnosed in an hour or less but many cannot.Any part that must be removed to gain access for testing can add to this.I just had a Hummer H2 with a BCM problem which is buried up in the dash.I had to disassemble almost the whole entire dash just to gain access to a connector for testing.I have also been paid several hours under factory warranty by different manufacturers to diagnose electric problems.Also the flat-rate system is a competitive bidding process meaning that all you are legally allowed to do is politely ask a technician what they are willing to perform the repair/s for and either accept or decline their bids.Flat-rate guides are for technician reference ONLY while preparing their OWN bids anyone else using them is making an agreement with a third-party to fix costs,prices or wages which is collusion and a crime.You should be sued to Hell! Price fixing is an agreement among competitors to raise, fix, or otherwise maintain the price at which their goods or services are sold. It is not necessary that the competitors agree to charge exactly the same price, or that every competitor in a given industry join the conspiracy. Price fixing can take many forms, and any agreement that restricts price competition violates the law. Other examples of price-fixing agreements include those to:

    Establish or adhere to price discounts.

    Hold prices firm.

    Eliminate or reduce discounts.

    Adopt a standard formula for computing prices.

    Maintain certain price differentials between different types, sizes, or quantities of products.

    Adhere to a minimum fee or price schedule.

    Fix credit terms.

    Not advertise prices.

    Reply to Comment