OBD Guide
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B1595

Ignition Switch Illegal Input Code

B1595 is an OBD-II diagnostic trouble code meaning: Ignition Switch Illegal Input Code. Common causes: ignition switch malfunction, wiring harness damage. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Engine won't start
  • Problems starting the engine
  • Check Engine Light Is On
  • Power Loss

Causes

  • Ignition switch malfunction
  • Wiring harness damage
  • Oxidation of contacts
  • ECU software failure

How to Fix

  1. Check the condition of the ignition switch
  2. Inspect the wiring harness for damage
  3. Check contacts for oxidation
  4. Perform ECU diagnostics

Related codes

B1590B1591B1592

FAQ

What does the B1595 code mean?

B1595 is an OBD-II diagnostic trouble code that indicates: Ignition Switch Illegal Input Code

What causes a B1595 error code?

The most common causes of B1595 include: Ignition switch malfunction; Wiring harness damage; Oxidation of contacts; ECU software failure.

How do I fix a B1595 diagnostic trouble code?

To fix B1595: Check the condition of the ignition switch. Inspect the wiring harness for damage. Check contacts for oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1595?

Yes, but get it checked soon

How much does it cost to fix B1595?

The estimated repair cost for B1595 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat