OBD Guide
ENFRDEESPT

B1484

Brake Pedal Input Open Circuit

B1484 is an OBD-II diagnostic trouble code meaning: Brake Pedal Input Open Circuit. Common causes: broken wires in the harness, oxidation of sensor contacts. Estimated repair cost: $33–89.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–89 (est.)

Symptoms

  • Disabling cruise control
  • Brake lights don't work
  • Check Engine light comes on
  • Gear shifting problems (for automatic transmissions)

Causes

  • Broken wires in the harness
  • Oxidation of sensor contacts
  • Malfunction of the brake pedal position sensor
  • Damage to connectors
  • Short circuit in the circuit

How to Fix

  1. Check the integrity of the wiring harness
  2. Clean sensor contacts and connectors
  3. Check sensor resistance
  4. Replace sensor if necessary
  5. Check the operation of the system after repair

Related codes

B1485C1234U0121

FAQ

What does the B1484 code mean?

B1484 is an OBD-II diagnostic trouble code that indicates: Brake Pedal Input Open Circuit

What causes a B1484 error code?

The most common causes of B1484 include: Broken wires in the harness; Oxidation of sensor contacts; Malfunction of the brake pedal position sensor; Damage to connectors.

How do I fix a B1484 diagnostic trouble code?

To fix B1484: Check the integrity of the wiring harness. Clean sensor contacts and connectors. Check sensor resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1484?

Do not drive — repair immediately

How much does it cost to fix B1484?

The estimated repair cost for B1484 is $33–89. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat