OBD Guide
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B1480

Battery Rundown Protection Circuit

B1480 is an OBD-II diagnostic trouble code meaning: Battery Rundown Protection Circuit. Common causes: discharge protection relay malfunction, wiring harness damage. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Battery drain after prolonged inactivity
  • Incorrect operation of the energy saving system
  • The indicator light on the dashboard comes on

Causes

  • Discharge protection relay malfunction
  • Wiring harness damage
  • Body Control Module (BCM) Problems
  • Short circuit in the circuit
  • Low battery voltage

How to Fix

  1. Check battery voltage
  2. Inspect the wiring harness for damage
  3. Check the operation of the discharge protection relay
  4. Scan the BCM for errors
  5. If necessary, replace faulty components

Related codes

B1481B1482U0140

FAQ

What does the B1480 code mean?

B1480 is an OBD-II diagnostic trouble code that indicates: Battery Rundown Protection Circuit

What causes a B1480 error code?

The most common causes of B1480 include: Discharge protection relay malfunction; Wiring harness damage; Body Control Module (BCM) Problems; Short circuit in the circuit.

How do I fix a B1480 diagnostic trouble code?

To fix B1480: Check battery voltage. Inspect the wiring harness for damage. Check the operation of the discharge protection relay. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1480?

Yes, but get it checked soon

How much does it cost to fix B1480?

The estimated repair cost for B1480 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat