AutoCodes – Chevrolet – P2157 2018 Chevrolet Silverado

P2157 2018 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 2018 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 275

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 Sep 08, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2157 2018 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 2018 Chevrolet Silverado - Cylinder 4 Injector High Control Circuit High Voltage - AutoCodes.com — P2157 2018 Chevrolet Silverado Code - Cylinder 4 Injector High Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2157 2018 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 2018 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 2018 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 2018 Chevrolet Silverado code?

Need more information on how to fix the P2157 2018 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 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2157 in a 2018 Chevrolet Silverado?

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

2. What does the OBDII code P2157 "Cylinder 4 Injector High Control Circuit High Voltage" indicate in a 2018 Chevrolet Silverado?

- This code indicates that there is a high voltage condition detected in the control circuit of the fuel injector for cylinder 4.

3. What are some possible causes of OBDII code P2157 in a 2018 Chevrolet Silverado?

- Possible causes include a faulty fuel injector, wiring issues in the injector circuit, a malfunctioning Engine Control Module (ECM), or a problem with the injector driver circuit.

4. How can I diagnose the cause of OBDII code P2157 in my 2018 Chevrolet Silverado?

- Diagnostic steps may include checking the wiring harness for any damage, testing the fuel injector for proper function, and inspecting the ECM for any signs of malfunction.

5. Can I continue driving my 2018 Chevrolet Silverado with OBDII code P2157 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to potential engine damage and decreased performance.

6. How can I clear the OBDII code P2157 in my 2018 Chevrolet Silverado?

- Clearing the code can be done using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to reset the ECM.

7. Is it safe to reset the OBDII code P2157 without addressing the underlying issue in my 2018 Chevrolet Silverado?

- While resetting the code may temporarily turn off the check engine light, it is important to diagnose and repair the underlying issue to prevent further damage to the vehicle.

8. Can a DIY enthusiast repair OBDII code P2157 in a 2018 Chevrolet Silverado?

- Depending on the cause of the code, some DIY repairs, such as checking and replacing the fuel injector or repairing wiring issues, may be possible for experienced individuals.

9. How much can I expect to pay for professional repairs for OBDII code P2157 in my 2018 Chevrolet Silverado?

- Repair costs can vary depending on the cause of the code and labor rates, but expect to pay anywhere from $100 to $500 for parts and labor.

10. How can I prevent OBDII code P2157 from occurring in my 2018 Chevrolet Silverado in the future?

- To prevent this code, it's essential to perform regular maintenance, such as checking and replacing fuel injectors as needed, ensuring proper wiring connections, and using high-quality fuel.