OBD Guide
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B2A26

Keypad Switch Circuit Failure

B2A26 is an OBD-II diagnostic trouble code meaning: Keypad Switch Circuit Failure. Common causes: broken or damaged wiring harness, short circuit in the circuit. Estimated repair cost: $56–167.

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

Symptoms

  • Buttons on the steering wheel or center console do not work
  • Spontaneous operation of buttons
  • Occurrence of other management-related errors

Causes

  • Broken or damaged wiring harness
  • Short circuit in the circuit
  • Key switch malfunction
  • Problems with the control unit

How to Fix

  1. Check the integrity of the wiring harness
  2. Check resistance and voltage in the key switch circuit
  3. Replace the faulty switch
  4. Update or replace the control unit if necessary

Related codes

B2A25B2A27U0121

FAQ

What does the B2A26 code mean?

B2A26 is an OBD-II diagnostic trouble code that indicates: Keypad Switch Circuit Failure

What causes a B2A26 error code?

The most common causes of B2A26 include: Broken or damaged wiring harness; Short circuit in the circuit; Key switch malfunction; Problems with the control unit.

How do I fix a B2A26 diagnostic trouble code?

To fix B2A26: Check the integrity of the wiring harness. Check resistance and voltage in the key switch circuit. Replace the faulty switch. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2A26?

Limited driving only, diagnose soon

How much does it cost to fix B2A26?

The estimated repair cost for B2A26 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat