OBD Guide
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B1527

Parasitic Load

B1527 is an OBD-II diagnostic trouble code meaning: Parasitic Load. Common causes: faulty relay, short circuit. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Low battery
  • Problems starting the engine
  • Flashing indicators on the dashboard

Causes

  • Faulty relay
  • Short circuit
  • Faulty module
  • Damaged wiring harness
  • Incorrect electrical connection

How to Fix

  1. Check the condition of the battery and generator
  2. Use an ammeter to measure parasitic load
  3. Turn off the fuses one at a time to isolate the problem.
  4. Check relays and modules for faults
  5. Inspect the wiring harness for damage

Related codes

B1528B1529

FAQ

What does the B1527 code mean?

B1527 is an OBD-II diagnostic trouble code that indicates: Parasitic Load

What causes a B1527 error code?

The most common causes of B1527 include: Faulty relay; Short circuit; Faulty module; Damaged wiring harness.

How do I fix a B1527 diagnostic trouble code?

To fix B1527: Check the condition of the battery and generator. Use an ammeter to measure parasitic load. Turn off the fuses one at a time to isolate the problem.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1527?

Limited driving only, diagnose soon

How much does it cost to fix B1527?

The estimated repair cost for B1527 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat