P2669
Actuator Supply Voltage B Circuit /Open
PCM actuator power supply
Generic OBD-II
Medium
What it means
P2669 means the PCM detected an open or missing voltage on the 'B' actuator supply circuit — a power feed the controller sends to a group of output actuators. If those actuators lose power, the engine can run poorly or, depending on what's on the circuit, stall. It's usually a blown fuse, open wiring, or a bad connector rather than the PCM itself.
Medium
Can I keep driving? Cautiously — an open actuator power feed can make the engine run poorly or, depending on what it powers, stall; have it checked promptly.
Common symptoms
What you'll notice
- Check-engine light on
- Rough running or hesitation
- Multiple actuator/solenoid codes set together
- Stalling or no-start in some cases
Common causes
Most likely first
- Blown fuse feeding the actuator supply circuitLikely
- Open or shorted actuator supply wiringCommon
- Corroded or loose connector on the supply circuitCommon
- Poor ground or failed supply relayLess often
- PCM fault (least likely)Less often
How to diagnose & fix
Work through it in order
- Check the fuse and power feed for the 'B' actuator supply circuit.
- Inspect the supply wiring and connectors for opens, corrosion, or chafing.
- Measure supply voltage at the affected actuators with the key on.
- Check the associated relay and grounds.
- Repair wiring/fuse first; consider the PCM only after the circuit checks out.
FAQ
Quick answers
Is it safe to drive with P2669?+
Be cautious. This circuit powers engine actuators, so depending on what's affected the engine may run poorly or stall. Get it diagnosed before relying on the vehicle.
Can I just clear P2669?+
You can, but an open feed or blown fuse will set it again, often with other actuator codes. Find and fix the power-circuit fault instead.
Related codes
Often seen with P2669
Read & clear P2669 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX