OBD Guide
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B1578

Lamp Park Input Circuit Short To Ground

B1578 is an OBD-II diagnostic trouble code meaning: Lamp Park Input Circuit Short To Ground. Common causes: wiring damage, parking lamp malfunction. Estimated repair cost: $22–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–56 (est.)

Symptoms

  • Parking light stays on constantly
  • No parking lamp signal
  • Incorrect operation of other lighting systems

Causes

  • Wiring damage
  • Parking lamp malfunction
  • Problems in the control unit
  • Short circuit in wiring harness

How to Fix

  1. Check the integrity of the wiring in the parking lamp circuit
  2. Replace the parking lamp if it is faulty
  3. Check the control unit for errors
  4. Repair short circuit in wiring harness

Related codes

B1577B1579

FAQ

What does the B1578 code mean?

B1578 is an OBD-II diagnostic trouble code that indicates: Lamp Park Input Circuit Short To Ground

What causes a B1578 error code?

The most common causes of B1578 include: Wiring damage; Parking lamp malfunction; Problems in the control unit; Short circuit in wiring harness.

How do I fix a B1578 diagnostic trouble code?

To fix B1578: Check the integrity of the wiring in the parking lamp circuit. Replace the parking lamp if it is faulty. Check the control unit for errors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1578?

Limited driving only, diagnose soon

How much does it cost to fix B1578?

The estimated repair cost for B1578 is $22–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat