P2054 Fault Code

Reductant Injector Circuit Low Bank 1 Unit 2

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

The P2054 fault code indicates a problem with the reductant injector circuit on Bank 1, specifically for Unit 2. This issue can affect the engine's emission control system, as the reductant injector plays a vital role in reducing nitrogen oxide emissions in diesel engines. If this component malfunctions, it may lead to increased emissions and potential damage to the exhaust system.

What are the symptoms of the P2054 code?

Symptoms associated with the P2054 code may include:

• Warning lights on the dashboard, such as the check engine light
• Decreased engine performance or power
• Poor fuel economy
• Increased emissions and possible failure during emission tests
• Visible smoke from the exhaust

What causes the P2054 code?

Common causes of the P2054 code include:

• Faulty reductant injector
• Wiring issues, such as shorts or open circuits in the injector circuit
• Dirty or contaminated diesel exhaust fluid (DEF)
• Poor connections or corroded terminals
• Malfunctioning control modules or sensors related to the exhaust system

How to fix P2054?

To address the P2054 fault code, consider the following steps:

• Inspect and repair the wiring and connectors related to the reductant injector circuit
• Test the reductant injector for proper operation and replace if necessary
• Ensure the DEF is clean and at the correct level; replace if contaminated
• Clear the fault code and perform a road test to verify resolution