P2670 serious

Actuator Supply Voltage 'A' Circuit Open

The P2670 code means the vehicle's onboard diagnostic system has detected: Actuator Supply Voltage 'A' Circuit Open. This is a serious severity code.

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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
  • Multiple engine management systems may fail
  • Erratic sensor readings
  • Engine may run poorly or stall
  • Multiple DTCs stored simultaneously

Probable Causes (Ranked by Likelihood)

  • Blown fuse in actuator supply circuit Very High
  • Open wiring in actuator supply harness High
  • Faulty PCM actuator supply relay Moderate
  • PCM internal voltage regulator failure Low

Step-by-Step Diagnostic Procedure

  1. Read freeze frame data and confirm P2670 is present

  2. Check fuses related to engine actuator circuits

  3. Measure supply voltage at multiple sensor connectors

  4. Inspect main engine harness for damage or open circuits

Frequently Asked Questions

What does P2670 mean?

P2670 indicates an issue with the actuator supply voltage 'a' circuit open. This voltage circuit powers various engine actuators and sensors critical for proper engine operation.

Can I drive with a P2670 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 P2670?

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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