OBD Guide
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B1330

Control Module Power 2 Circuit

B1330 is an OBD-II diagnostic trouble code meaning: Control Module Power 2 Circuit. Common causes: wiring harness damage, poor contact in connectors. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Unstable engine operation
  • Problems starting the engine
  • Check Engine Light Is On

Causes

  • Wiring harness damage
  • Poor contact in connectors
  • Faulty relay or fuse
  • Battery or alternator problems

How to Fix

  1. Check the condition of the wiring harness for damage
  2. Inspect the control unit connectors for oxidation or poor contact.
  3. Check relays and fuses associated with the power circuit
  4. Measure the voltage on the battery and generator

Related codes

B1327B1331P0562

FAQ

What does the B1330 code mean?

B1330 is an OBD-II diagnostic trouble code that indicates: Control Module Power 2 Circuit

What causes a B1330 error code?

The most common causes of B1330 include: Wiring harness damage; Poor contact in connectors; Faulty relay or fuse; Battery or alternator problems.

How do I fix a B1330 diagnostic trouble code?

To fix B1330: Check the condition of the wiring harness for damage. Inspect the control unit connectors for oxidation or poor contact.. Check relays and fuses associated with the power circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1330?

Limited driving only, diagnose soon

How much does it cost to fix B1330?

The estimated repair cost for B1330 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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