P2670 Fault Code

Actuator Supply Voltage B Circuit Low

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

The P2670 fault code indicates an issue with the actuator supply voltage B circuit, specifically that the voltage level is low. This circuit typically supplies power to various actuators in the vehicle, affecting their operation and functionality.

• Low voltage may impair the performance of components like the throttle actuator, fuel injectors, or other vital systems.
• Monitoring the voltage levels is crucial for ensuring that these components receive the necessary power for optimal operation.

What are the symptoms of the P2670 code?

Symptoms associated with the P2670 code can manifest as:

• Reduced power or performance from affected systems or components.
• Warning lights illuminated on the dashboard, such as the check engine light.
• Erratic behavior in systems controlled by the affected actuators, such as throttling issues or inconsistent fuel delivery.
• Difficulty starting the vehicle if voltage supply issues are severe.

What causes the P2670 code?

Possible causes for this code include:

• A faulty actuator or sensor that draws excessive current, leading to voltage drop.
• Corroded or damaged wiring or connectors within the actuator supply circuit.
• A weak or failing battery that cannot provide adequate voltage.
• Issues with the vehicle's voltage regulator or charging system that affect voltage stability.

How to fix P2670?

To address the P2670 fault code, follow these steps:

• Inspect and test the actuator supply voltage circuit for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
• Check the voltage levels using a multimeter; ensure they meet the specifications outlined in the vehicle's service manual.
• Test the actuators and sensors connected to this circuit for proper operation and replace any faulty components.
• If necessary, test the vehicle's battery and charging system, replacing components that do not perform as expected.