OBD Guide
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B1405

Control Module Voltage Reference Output 2 Circuit

B1405 is an OBD-II diagnostic trouble code meaning: Control Module Voltage Reference Output 2 Circuit. Common causes: open or short circuit in wiring harness, contact corrosion. Estimated repair cost: $56–222.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–222 (est.)

Symptoms

  • Incorrect engine operation
  • Check Engine Light Illuminates
  • Floating idle
  • Power Loss

Causes

  • Open or short circuit in wiring harness
  • Contact corrosion
  • Control module malfunction
  • Poor grounding

How to Fix

  1. Conduct a visual inspection of the wiring harness for damage.
  2. Check the continuity of the reference voltage circuit using a multimeter
  3. Check contacts for oxidation and corrosion
  4. If necessary, replace the control module

Related codes

B1404B1406P0650

FAQ

What does the B1405 code mean?

B1405 is an OBD-II diagnostic trouble code that indicates: Control Module Voltage Reference Output 2 Circuit

What causes a B1405 error code?

The most common causes of B1405 include: Open or short circuit in wiring harness; Contact corrosion; Control module malfunction; Poor grounding.

How do I fix a B1405 diagnostic trouble code?

To fix B1405: Conduct a visual inspection of the wiring harness for damage.. Check the continuity of the reference voltage circuit using a multimeter. Check contacts for oxidation and corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1405?

Limited driving only, diagnose soon

How much does it cost to fix B1405?

The estimated repair cost for B1405 is $56–222. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat