P2669 OBD-II Trouble Code: Actuator Supply Voltage B Circuit/Open

P2669 Code Definition

The P2669 code is a generic powertrain code related to a computer output circuit issue. In this case, it is showing that the actuator supply voltage to the B circuit is open.

Codes related to the P2669 include:

• P0657: Actuator Supply Voltage A Circuit/Open
• P0658: Actuator Supply Voltage A Circuit Low
• P0659: Actuator Supply Voltage A Circuit High
• P2670: Actuator Supply Voltage B Circuit Low
• P2671: Actuator Supply Voltage B Circuit High

What the P2669 Code Means

If the engine control module (ECM) or another control module reads that the actuator supply voltage B has a malfunction, a P2669 code will be stored. Additional control modules that may detect the fault could include the fuel injection control module, instrument panel control module, body control module, and others.

What Causes the P2669 Code?

Several problems may cause a P2669 code including:

• Damaged, corroded, open, or shorted wiring or connectors with any of the connected control modules
• Damaged, open, or shorted wiring or connectors in the ECM
• Loose or not connected ground wires to the ECM
• Loose or not connected ground wires to any other control module
• Damaged or defective ECM

What are the Symptoms of the P2669 Code?

Symptoms of a P2669 code may include:

• Warning or Check Engine Soon Light may illuminate
• Vehicle may not start
• Vehicle may start difficulty
• The engine may run roughly during idle
• Vehicle may hesitate during operation
• Lowered fuel efficiency
• Engine misfire

How Does a Mechanic Diagnose the P2669 Code?

A mechanic may use several methods to diagnose a P2669 trouble code, including:

• Utilize an OBD-II scanner to check for a stored P2669 trouble code
• Visually inspect all wires and connectors for damage or defects
• Visually and manually check for any loose or disconnected wires or connectors to the ECM or other control modules
• Utilize a scanner to pinpoint the specific or general area of the malfunction
• Test control ground modules for continuity with battery ground

Common Mistakes when Diagnosing the P2669 Code

When diagnosing a P2669 code, be sure to locate the full cause of the problem. At times, symptoms and codes store could be a reaction to a different communication issue and may be misdiagnosed, which could lead to unnecessary repairs.

How Serious is the P2669 Code?

Because a vehicle’s safe driving operation is may be impacted due to faults that store a P2669 code, this is considered a potentially serious code. When this code is stored, it is recommended that you take your vehicle to a service center or mechanic for diagnosis and repair as soon as possible.

What Repairs can Fix the P2669 Code?

Several repairs can fix a P2669 trouble code and include:

• Replace any damaged or corroded wiring and connectors (Note: this can be incredibly time consuming, and if not done properly could damage control modules)

• Replace any damaged or defective control modules

• Repair or replace damaged or defective ECM (rare)

• Clear all codes, test-drive the vehicle, and re-scan to see if any codes reappear

Additional Comments for Consideration Regarding the P2669 Code

Due to the electrical work that may be involving in repairing a P2669 code, it is recommended to take your vehicle to a professional for repairs.

In addition, there have been technical service bulletins (TSBs) related to the P2669 code, and YourMechanic recommends to always check for any related bulletins prior to any vehicle repairs.

Need Help with a P2669 Code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.