Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a special system that helps reduce pollution. This system has a part that sprays a liquid to clean the exhaust. Right now, the car's computer is saying that the part that sprays the liquid isn't working properly on one side of the engine.
The P2057 code indicates a problem with the electrical circuit controlling the reductant injection valve on Bank 2, Unit 2. The circuit is reporting a low voltage condition.
The reductant injection valve is part of the Selective Catalytic Reduction (SCR) system, which injects a urea-based solution into the exhaust to reduce NOx emissions. The P2057 code is triggered when the Engine Control Module (ECM) detects that the voltage in the circuit controlling the reductant injection valve is lower than expected, indicating a potential wiring issue or a faulty valve.
• Check Engine Light is on
• Reduced engine performance
• Increased emissions
• Faulty reductant injection valve
• Damaged or corroded wiring or connectors
• Faulty Engine Control Module (ECM)
SCR: Selective Catalytic Reduction, a system to reduce NOx emissions.
ECM: Engine Control Module, the computer that controls engine functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the reductant injection valve for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the reductant injection valve if faulty.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-250
• Chevrolet Silverado
• Ram 2500
• Regularly inspect and maintain the SCR system.
• Ensure high-quality reductant fluid is used.
• Perform regular vehicle diagnostics.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional.
• Avoid driving the vehicle excessively until repaired.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has been associated with vehicles equipped with SCR systems since their introduction to meet emission standards.
Moderate – Should be addressed soon to prevent increased emissions and potential damage to the SCR system.
Operating a vehicle with a malfunctioning emissions system may violate environmental regulations.
• Engine at operating temperature
• Vehicle in closed-loop mode
The reductant injection valve is typically located near the exhaust system on the side of the engine corresponding to Bank 2.
Q: Can I drive with a P2057 code?
A: It's not recommended to drive for an extended period with this code, as it can lead to increased emissions and potential damage to the emission control system.
Q: What is a reductant injection valve?
A: It's a component in the SCR system that injects a urea-based solution into the exhaust to reduce harmful emissions.
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