OBD Guide
ENFRDEESPT

P1636

Inductive Signature Chip Communication Error

P1636 is an OBD-II diagnostic trouble code meaning: Inductive Signature Chip Communication Error. Common causes: signature chip failure, wiring harness damage. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Engine won't start
  • Check engine light is on
  • The car goes into emergency mode
  • Problems with the immobilizer system

Causes

  • Signature chip failure
  • Wiring harness damage
  • Problems with the engine ECU
  • Software glitches
  • Immobilizer system malfunction

How to Fix

  1. Check the integrity of the wiring harness
  2. Diagnose signature chip
  3. Check ECU software
  4. Replace faulty components
  5. Repair only from an authorized dealer

Related codes

P1635P1637P1638

Error P1636 by Vehicle Brand

BMWBuickCadillacChevroletFordGMGMCLincolnMercuryOldsmobileSaturnVolkswagen

FAQ

What does the P1636 code mean?

P1636 is an OBD-II diagnostic trouble code that indicates: Inductive Signature Chip Communication Error

What causes a P1636 error code?

The most common causes of P1636 include: Signature chip failure; Wiring harness damage; Problems with the engine ECU; Software glitches.

How do I fix a P1636 diagnostic trouble code?

To fix P1636: Check the integrity of the wiring harness. Diagnose signature chip. Check ECU software. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1636?

Do not drive — repair immediately

How much does it cost to fix P1636?

The estimated repair cost for P1636 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat