OBD Guide
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B1E3A

Sensor Power Circuit Voltage

B1E3A is an OBD-II diagnostic trouble code meaning: Sensor Power Circuit Voltage. Common causes: open or short circuit in wiring harness, oxidation of sensor contacts. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Unstable engine operation
  • Check Engine Light Illuminates
  • Power reduction
  • Dips during acceleration

Causes

  • Open or short circuit in wiring harness
  • Oxidation of sensor contacts
  • Faulty relay or fuse
  • Problems with the control unit

How to Fix

  1. Check the integrity of the wiring harness
  2. Inspect the sensor contacts for oxidation
  3. Check the voltage at the sensor contacts
  4. Replace fuse or relay if necessary
  5. Test the control unit

Related codes

P0102P0103P0112P0113

FAQ

What does the B1E3A code mean?

B1E3A is an OBD-II diagnostic trouble code that indicates: Sensor Power Circuit Voltage

What causes a B1E3A error code?

The most common causes of B1E3A include: Open or short circuit in wiring harness; Oxidation of sensor contacts; Faulty relay or fuse; Problems with the control unit.

How do I fix a B1E3A diagnostic trouble code?

To fix B1E3A: Check the integrity of the wiring harness. Inspect the sensor contacts for oxidation. Check the voltage at the sensor contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1E3A?

Limited driving only, diagnose soon

How much does it cost to fix B1E3A?

The estimated repair cost for B1E3A is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat