P2149 Fault Code

Fuel Injector Group B Supply Voltage Circuit/Open

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

The P2149 fault code indicates a problem with the fuel injector group B supply voltage circuit, suggesting there may be an open circuit affecting the voltage supply to the fuel injectors. This often leads to engine performance issues as the fuel injectors are unable to receive the necessary voltage.

What are the symptoms of the P2149 code?

The symptoms associated with a P2149 fault code may include:

• Engine misfires or rough idling
• Decreased engine performance and acceleration
• Increased fuel consumption
• Check Engine Light (CEL) illumination
• Hard starting or difficulty in starting the engine

What causes the P2149 code?

Several potential causes can lead to this fault code, including:

• Damaged wiring or connectors in the fuel injector circuit
• A malfunctioning fuel injector
• Issues with the engine control module (ECM)
• A blown fuse related to the fuel injector supply
• Corrosion in electrical connections

How to fix P2149?

To resolve the P2149 fault code, consider the following steps:

• Inspect the wiring and connectors for any visible damage or wear. Repair or replace as necessary.
• Test the fuel injectors for proper operation and resistance values. Replace any that are faulty.
• Check all relevant fuses for any blown fuses and replace them if needed.
• Inspect the ECM for faults or related issues, and consider reprogramming or replacing if necessary.
• Clear the fault code and conduct a road test to ensure that the issue is resolved.