OBD Guide

B0977

Start Indicator Control Circuit

B0977 is an OBD-II diagnostic trouble code meaning: Start Indicator Control Circuit. Common causes: open or short circuit in wiring harness, start indicator malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • The engine start indicator does not light up when the ignition is turned on
  • The engine start indicator does not go off after starting
  • The engine is difficult to start or does not start

Causes

  • Open or short circuit in wiring harness
  • Start indicator malfunction
  • Problems with the control module
  • Poor contact in connectors

How to Fix

  1. Check the integrity of the wiring harness
  2. Check that the start indicator is working properly
  3. Check contacts in connectors
  4. Scan the control module for other errors
  5. If necessary, replace faulty components

Related codes

Error B0977 by Vehicle Brand

FAQ

What does the B0977 code mean?

B0977 is an OBD-II diagnostic trouble code that indicates: Start Indicator Control Circuit

What causes a B0977 error code?

The most common causes of B0977 include: Open or short circuit in wiring harness; Start indicator malfunction; Problems with the control module; Poor contact in connectors.

How do I fix a B0977 diagnostic trouble code?

To fix B0977: Check the integrity of the wiring harness. Check that the start indicator is working properly. Check contacts in connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B0977?

Limited driving only, diagnose soon

How much does it cost to fix B0977?

The estimated repair cost for B0977 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat