• Check Engine Light illuminated
• Reduced engine performance
• Increased emissions
• Faulty reductant pump
• Damaged or corroded wiring/connectors
• Failed reductant control module
Reductant: A substance used to reduce emissions in diesel engines.
SCR: Selective Catalytic Reduction, a system used to reduce emissions in diesel engines.
• P2064
• P2065
Reductant/Regeneration Supply Control Circuit Low
This code means that there is a problem with the system in your car that helps reduce pollution. It's like when a toy's battery is running low and it can't work properly.
The P2063 code indicates that the reductant or regeneration supply control circuit is experiencing low voltage, which affects the vehicle's ability to reduce emissions effectively.
The P2063 code is triggered when the Engine Control Module (ECM) detects a low voltage condition in the reductant or regeneration supply control circuit. This circuit is responsible for controlling the supply of reductant (such as diesel exhaust fluid) to the exhaust system to reduce emissions. A low voltage condition can indicate a problem with the wiring, connectors, or components within this circuit.
• Scan the vehicle for OBD-II codes and note any other related codes.
• Inspect the wiring and connectors for damage or corrosion.
• Test the reductant pump and control module for proper operation.
• Repair or replace damaged wiring/connectors.
• Replace the reductant pump if it is faulty.
• Replace the reductant control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $600
Moderate
• Ford F-250
• Chevrolet Silverado
• Ram 2500
• Regularly inspect and maintain the exhaust system components.
• Ensure the reductant tank is filled with the correct fluid.
• Perform regular diagnostic scans to catch issues early.
Sensor Issue
• Have your vehicle inspected by a professional mechanic.
• Avoid driving long distances until the issue is resolved.
• Keep a record of any repairs or diagnostics performed.
Check with your vehicle manufacturer for warranty coverage on emission-related components.
The P2063 code has been observed in diesel vehicles equipped with selective catalytic reduction (SCR) systems to meet emission standards.
Moderate – It is recommended to address this issue soon to avoid increased emissions and potential engine performance issues.
Driving with a malfunctioning emission system may violate local emission laws and can contribute to environmental pollution.
• Vehicle engine at operating temperature
• Perform tests with the engine running
The reductant pump and control module are typically located near the exhaust system or reductant tank.
Q: Can I drive my car with a P2063 code?
A: It's not recommended to drive for long periods with this code, as it can lead to increased emissions and potential damage to the emission system.
Q: What is a reductant in my vehicle?
A: A reductant, such as diesel exhaust fluid (DEF), is used in diesel engines to reduce harmful emissions by converting nitrogen oxides into harmless nitrogen and water.
