P2675 moderate

Actuator Supply Voltage 'B' Circuit High

The P2675 code means the vehicle's onboard diagnostic system has detected: Actuator Supply Voltage 'B' Circuit High. This is a moderate severity code.

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Keep driving?
Short distances only
DIY difficulty
moderate
Estimated cost
$150 - $600 (parts and labor)
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Common Symptoms

  • Check Engine Light on
  • Possible sensor reading errors
  • Engine management adapting to incorrect voltage
  • Charging system warning
  • Erratic operation of secondary systems

Probable Causes (Ranked by Likelihood)

  • Alternator overcharging Very High
  • Short to power in supply B circuit High
  • Faulty voltage regulator Moderate
  • PCM supply B regulation failure Low

Step-by-Step Diagnostic Procedure

  1. Read freeze frame data and confirm P2675 is present

  2. Test alternator output voltage at idle and under load

  3. Measure circuit B voltage at PCM connector

  4. Check for wiring shorts to battery positive

Frequently Asked Questions

What does P2675 mean?

P2675 indicates an issue with the actuator supply voltage 'b' circuit high. This voltage circuit powers various engine actuators and sensors critical for proper engine operation.

Can I drive with a P2675 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 P2675?

Repairs typically cost $150 - $600. 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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