Actuator Supply Voltage 'B' Circuit Open
The P2673 code means the vehicle's onboard diagnostic system has detected: Actuator Supply Voltage 'B' Circuit Open. This is a serious severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $100 - $500 (parts and labor)
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Common Symptoms
- Check Engine Light on
- Secondary actuator systems may not function
- Possible transmission shifting issues
- EVAP or emissions systems affected
- Multiple codes stored
Probable Causes (Ranked by Likelihood)
- Blown fuse in secondary actuator circuit Very High
- Open wire in actuator supply B circuit High
- Relay failure for secondary actuator supply Moderate
- PCM pin damage or poor connection Low
Step-by-Step Diagnostic Procedure
-
Read freeze frame data and confirm P2673 is present
-
Check fuses for secondary actuator circuits
-
Measure supply voltage B at PCM connector
-
Inspect relay and power distribution for circuit B
Frequently Asked Questions
What does P2673 mean?
P2673 indicates an issue with the actuator supply voltage 'b' circuit open. This voltage circuit powers various engine actuators and sensors critical for proper engine operation.
Can I drive with a P2673 code?
You can drive short distances, but multiple engine systems may be affected. Have the charging and wiring systems checked promptly.
How much does it cost to fix P2673?
Repairs typically cost $100 - $500. A blown fuse is a quick fix, while alternator or wiring repairs cost more.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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