AutoCodes – Chevrolet – P2157 2017 Chevrolet Silverado

P2157 2017 Chevrolet Silverado Code - Cylinder 4 Injector High Control Circuit High Voltage

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: P2157 2017 Chevrolet Silverado indicates Cylinder 4 Injector High Control Circuit High Voltage.
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 217

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 Sep 08, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2157 2017 Chevrolet Silverado Description

The Engine Control Module (ECM) supplies voltage to each fuel injector on the high control circuits. The ECM energizes each fuel injector by grounding the low control circuit of the fuel injector. The ECM monitors the status of the fuel injector circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is disabled. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the fuel injector high voltage supply circuit is shorted to voltage for greater than 2 s.

OBDII Code P2157 2017 Chevrolet Silverado - Cylinder 4 Injector High Control Circuit High Voltage - AutoCodes.com — P2157 2017 Chevrolet Silverado Code - Cylinder 4 Injector High Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2157 2017 Chevrolet Silverado?

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 P2157 2017 Chevrolet Silverado?

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 P2157 2017 Chevrolet Silverado 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 P2157 2017 Chevrolet Silverado code?

Need more information on how to fix the P2157 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P2157 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2157 in a 2017 Chevrolet Silverado?

- Common symptoms may include engine misfires, rough idling, decreased fuel efficiency, and potential stalling of the vehicle.

2. What can cause the OBDII code P2157 to trigger on a 2017 Chevrolet Silverado?

- The code P2157 typically indicates a high voltage condition in the control circuit of the fuel injector for cylinder 4. Potential causes include a faulty fuel injector, wiring issues, or a problem with the Engine Control Module (ECM).

3. How serious is the OBDII code P2157 in a 2017 Chevrolet Silverado?

- While the vehicle may still be operable with this code present, it is important to address it promptly to prevent potential damage to the engine and to ensure optimal vehicle performance.

4. Can I continue driving my 2017 Chevrolet Silverado with the P2157 code present?

- It is generally not recommended to continue driving the vehicle with the P2157 code present, as it can lead to further engine problems and decreased fuel efficiency.

5. How can I diagnose the OBDII code P2157 in my 2017 Chevrolet Silverado?

- Diagnosing the code involves performing a thorough inspection of the fuel injector for cylinder 4, checking the wiring for any faults, and using a scan tool to monitor the voltage readings.

6. What are some possible repair tips for fixing the OBDII code P2157 in a 2017 Chevrolet Silverado?

- Repair tips may include replacing the faulty fuel injector for cylinder 4, repairing any damaged wiring, and resetting the ECM to clear the code.

7. Is it advisable to attempt repairing the OBDII code P2157 in a 2017 Chevrolet Silverado without professional help?

- While some basic repairs such as checking and cleaning connections can be done by DIY enthusiasts, it is recommended to seek professional help for complex issues like fuel injector replacement or ECM troubleshooting.

8. How much does it typically cost to fix the OBDII code P2157 in a 2017 Chevrolet Silverado?

- The cost of fixing the P2157 code can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. What are the long-term effects of ignoring the OBDII code P2157 in a 2017 Chevrolet Silverado?

- Ignoring the P2157 code can lead to increased fuel consumption, potential engine damage due to misfires, and ultimately more expensive repairs in the future.

10. Can a regular vehicle owner reset the OBDII code P2157 in a 2017 Chevrolet Silverado without a professional scan tool?

- While it is possible to reset the code using methods like disconnecting the battery, a professional scan tool is recommended for accurate diagnosis and proper clearing of the code.