Engine-Codes.com
Engine-Codes – GMC – P2057 GMC

P2057 GMC Code - Reductant Injection Valve Circuit Low Bank 2 Unit 2

Quick Answer

The P2057 GMC code indicates a problem with the Reductant Injection Valve Circuit Low on Bank 2 Unit 2. Common causes include Faulty Reductant Injection Valve, Damaged wiring or connectors in the circuit, Malfunctioning ECM. 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
P2057 GMC indicates Reductant Injection Valve Circuit Low Bank 2 Unit 2.
Common causes
Common causes include Faulty Reductant Injection Valve, Damaged wiring or connectors in the circuit, Malfunctioning ECM.
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 09, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P2057 GMC Description

The P2057 GMC code indicates a problem with the Reductant Injection Valve Circuit Low on Bank 2 Unit 2. This component is part of the Selective Catalytic Reduction (SCR) system, which is responsible for reducing harmful emissions in the vehicle's exhaust gases. The Reductant Injection Valve injects a urea-based solution (AdBlue) into the exhaust stream to break down nitrogen oxides into harmless nitrogen and oxygen.

OBDII Code P2057 GMC - Reductant Injection Valve Circuit Low Bank 2 Unit 2
P2057 GMC Code - Reductant Injection Valve Circuit Low Bank 2 Unit 2

Common Causes of P2057 GMC

  1. Faulty Reductant Injection Valve
  2. Damaged wiring or connectors in the circuit
  3. Malfunctioning ECM
  4. Issue with AdBlue supply system

Symptoms of P2057 GMC

  1. Check Engine Light illuminated
  2. Decreased fuel efficiency
  3. Reduced engine power
  4. Increased emissions output
  5. Failed emissions tests

How to Fix P2057 GMC

  1. Use a scan tool to retrieve the fault codes and verify the P2057 GMC code.
  2. Inspect the Reductant Injection Valve and wiring harness for any visible damage.
  3. Test the Reductant Injection Valve's resistance and voltage to determine if it is functioning properly.
  4. Check the ECM for any stored codes related to the Reductant Injection Valve Circuit Low.
  5. If necessary, replace the Reductant Injection Valve and repair any damaged wiring or connectors.

Cost to Fix P2057 GMC

The typical repair cost for addressing a P2057 GMC code can vary depending on the specific cause of the issue. In general, replacing a Reductant Injection Valve can cost between $200 and $500, including parts and labor. Additional diagnostic time and labor rates at auto repair shops can further impact the total cost. It's recommended to consult with a qualified mechanic for an accurate estimate based on the vehicle's make and model.

Need more information about the P2057 GMC code?

Need more information on how to fix the P2057 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2057 GMC code diagnosed by a professional: Find a repair shop in your area

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 P2057 GMC Code

No Frequently Asked Questions about P2057 GMC Code found.

Discuss the causes and fixes for P2057 GMC OBDII Code

Submit a New Comment

Code P2057 GMC comments

No comments found for this page.