P2148 Fault Code

Fuel Injector Group A Supply Voltage Circuit High

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

The P2148 fault code indicates an issue with the Fuel Injector Group A Supply Voltage Circuit, where the voltage is higher than expected. This can lead to improper operation of the fuel injectors, which might affect engine performance.

What are the symptoms of the P2148 code?

Drivers may experience several symptoms associated with the P2148 fault code, such as:

• Poor engine performance or misfires as fuel delivery is affected.
• Increased fuel consumption due to improper injector operation.
• Illumination of the check engine light (CEL) on the dashboard.
• Difficulty starting the engine or stalling during operation.

What causes the P2148 code?

Common causes of the P2148 fault code include:

• Damaged wiring or connectors in the fuel injector circuit.
• Short circuits within the fuel injector harness or to adjacent circuits.
• Faulty fuel injectors that could be drawing excessive current.
• Issues with the engine control module (ECM) that may be misreading or sending incorrect voltage levels.

How to fix P2148?

To resolve the P2148 fault code, the following steps should be taken:

• Inspect the fuel injector wiring and connectors for signs of damage or corrosion; repair or replace as necessary.
• Check for any short circuits within the fuel injector circuit that could be causing excessive voltage.
• Test the fuel injectors for proper operation and replace any that are faulty.
• Utilize a diagnostic scanner to clear the code and monitor vehicle performance to ensure the issue is resolved.