OBD Guide

P1613

MIL Request Signal Circuit High Input

P1613 is an OBD-II diagnostic trouble code meaning: MIL Request Signal Circuit High Input. Common causes: short circuit to positive in the mil signal circuit, engine control unit (ecu) malfunction. Estimated repair cost: $6–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • Check Engine Light Is Constantly On
  • The Check Engine Light does not come on when the ignition is turned on.
  • Inability to read fault codes
  • Car diagnostic problems

Causes

  • Short circuit to positive in the MIL signal circuit
  • Engine control unit (ECU) malfunction
  • Wiring harness damage
  • Problems with contacts in connectors
  • Corrosion in electrical connections

How to Fix

  1. Test the MIL signal circuit for a short to positive.
  2. Inspect the wiring harness for damage
  3. Check the contacts in the ECU and dashboard connectors
  4. Test ECU operation
  5. Replace damaged wires or connectors

Related codes

Error P1613 by Vehicle Brand

FAQ

What does the P1613 code mean?

P1613 is an OBD-II diagnostic trouble code that indicates: MIL Request Signal Circuit High Input

What causes a P1613 error code?

The most common causes of P1613 include: Short circuit to positive in the MIL signal circuit; Engine control unit (ECU) malfunction; Wiring harness damage; Problems with contacts in connectors.

How do I fix a P1613 diagnostic trouble code?

To fix P1613: Test the MIL signal circuit for a short to positive.. Inspect the wiring harness for damage. Check the contacts in the ECU and dashboard connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1613?

Yes, but get it checked soon

How much does it cost to fix P1613?

The estimated repair cost for P1613 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat