OBD Guide
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B1395

Control Module Voltage Reference Output 1

B1395 is an OBD-II diagnostic trouble code meaning: Control Module Voltage Reference Output 1. Common causes: ecu malfunction, wiring harness damage. Estimated repair cost: $56–333.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–333 (est.)

Symptoms

  • Incorrect engine operation
  • Unstable idle
  • Check engine light comes on
  • Incorrect sensor readings

Causes

  • ECU malfunction
  • Wiring harness damage
  • Contact corrosion
  • Short circuit in the circuit
  • Malfunction of the sensor creating a load on the circuit

How to Fix

  1. Check the integrity of the wiring harness and contacts
  2. Measure the reference voltage at the sensor connectors
  3. Check resistance and absence of short circuit in the circuit
  4. Check the operation of the sensors connected to this circuit
  5. If necessary, replace the ECU

Related codes

B1396B1397P0641P0651

FAQ

What does the B1395 code mean?

B1395 is an OBD-II diagnostic trouble code that indicates: Control Module Voltage Reference Output 1

What causes a B1395 error code?

The most common causes of B1395 include: ECU malfunction; Wiring harness damage; Contact corrosion; Short circuit in the circuit.

How do I fix a B1395 diagnostic trouble code?

To fix B1395: Check the integrity of the wiring harness and contacts. Measure the reference voltage at the sensor connectors. Check resistance and absence of short circuit in the circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1395?

Limited driving only, diagnose soon

How much does it cost to fix B1395?

The estimated repair cost for B1395 is $56–333. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat