P2041 Fault Code

Reductant Injection Air Pressure Sensor Circuit Intermittent

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2041 fault code refers to an intermittent issue with the reductant injection air pressure sensor circuit. This sensor is part of the system that reduces harmful emissions in diesel engines by injecting a urea solution into the exhaust stream. When the circuit experiences irregularities, it can lead to poor engine performance and increased emissions.

What are the symptoms of the P2041 code?

When the P2041 code is present, you may notice:

• Check Engine Light illuminated on the dashboard
• Reduced engine performance or power
• Increased emissions or failed emissions tests
• Possible limp mode, causing restricted vehicle speed or acceleration.

What causes the P2041 code?

Common causes of the P2041 code include:

• Faulty or damaged reductant injection air pressure sensor
• Wiring issues such as short circuits, open circuits, or corrosion in the connector
• Malfunctioning engine control module (ECM)
• Issues in the reductant injection system, such as low urea levels or blockages.

How to fix P2041?

To address the P2041 fault code, follow these general steps:

1. Use a diagnostic scanner to confirm the P2041 code and check for any related codes.
2. Inspect the wiring and connectors leading to the reductant injection air pressure sensor for damage or corrosion.
3. Test the sensor using a multimeter to ensure it is functioning properly.
4. Replace the sensor if it is found to be faulty.
5. Clear the codes from the ECM and perform a road test to confirm the issue is resolved.