OBD Guide
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B1536

Memory 2 Switch Circuit Open

B1536 is an OBD-II diagnostic trouble code meaning: Memory 2 Switch Circuit Open. Common causes: open wire in memory switch 2 wiring harness, oxidation or corrosion of contacts in the connector. Estimated repair cost: $28–89.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$28–89 (est.)

Symptoms

  • Security malfunction indicator on the dashboard
  • No seat/mirror memory function
  • Inability to save parameter settings
  • Possible interruptions in the operation of electrical controls
  • The security system operates in emergency mode

Causes

  • Open wire in memory switch 2 wiring harness
  • Oxidation or corrosion of contacts in the connector
  • Loose or incorrectly connected connector
  • Memory switch internal fault
  • Damage to the electronic control unit (rare)
  • Switch power supply problem
  • Blown circuit fuse

How to Fix

  1. Connect a scan tool to confirm code B1536 and check related codes
  2. Visually inspect the memory switch 2 wiring harness for damage, kinks, or debris
  3. Check the connector for oxidation, corrosion, or loose contacts.
  4. Disconnect and reconnect the connector, making sure the fit is tight.
  5. Clean the connector contacts with a special liquid for cleaning electrical contacts.
  6. Using a multimeter, check the continuity of the wire (resistance should be close to zero)
  7. Check the supply voltage at the switch (usually 12V)
  8. If necessary, replace the damaged section of the harness or the entire harness
  9. Replace memory switch 2 if testing shows it is faulty
  10. Clear the error code and perform a test drive to confirm that the problem has been resolved.

Related codes

B1535B1537B1538B1500B1501U0001

FAQ

What does the B1536 code mean?

B1536 is an OBD-II diagnostic trouble code that indicates: Memory 2 Switch Circuit Open

What causes a B1536 error code?

The most common causes of B1536 include: Open wire in memory switch 2 wiring harness; Oxidation or corrosion of contacts in the connector; Loose or incorrectly connected connector; Memory switch internal fault.

How do I fix a B1536 diagnostic trouble code?

To fix B1536: Connect a scan tool to confirm code B1536 and check related codes. Visually inspect the memory switch 2 wiring harness for damage, kinks, or debris. Check the connector for oxidation, corrosion, or loose contacts.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1536?

Do not drive — repair immediately

How much does it cost to fix B1536?

The estimated repair cost for B1536 is $28–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat