P2155 Code - Cylinder 4 Injector High Control Circuit
Quick Answer
The Engine Control Module (ECM) supplies voltage to each fuel injector on the high control circuits. 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
- P2155 indicates Cylinder 4 Injector High Control Circuit.
- 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.
Code P2155 Description
What are the Possible Causes of the DTC P2155?
- Faulty Fuel Injector 4
- Fuel Injector 4 harness is open or shorted
- Fuel Injector 4 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P2155?
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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2155 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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Information for Specific Makes
- P2155 Buick — Cylinder 4 Injector High Control Circuit
- P2155 Cadillac — Cylinder 4 Injector High Control Circuit
- P2155 Chevrolet — Cylinder 4 Injector High Control Circuit
- P2155 Dodge — Cylinder 4 Injector High Control Circuit
- P2155 GMC — Cylinder 4 Injector High Control Circuit
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.
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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.
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