OBD Guide
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B2676

Keypad C Switch Circuit Failure

B2676 is an OBD-II diagnostic trouble code meaning: Keypad C Switch Circuit Failure. Common causes: open/short circuit in button c circuit, oxidation of key contacts/connectors. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Some buttons on the control unit do not work
  • Problems with central locking
  • Immobilizer indicator flashing
  • Difficulty starting the engine

Causes

  • Open/short circuit in button C circuit
  • Oxidation of key contacts/connectors
  • Mechanical failure of the button
  • Wiring harness damage
  • Control unit malfunction

How to Fix

  1. Check the integrity of the wiring harness (visually + with a multimeter)
  2. Clean the contacts of button C and the control unit connector
  3. Replace the faulty button/keyboard
  4. Test the power supply and signal circuits of the control unit
  5. If necessary, replace the control unit

Related codes

B2677B2675B2770

FAQ

What does the B2676 code mean?

B2676 is an OBD-II diagnostic trouble code that indicates: Keypad C Switch Circuit Failure

What causes a B2676 error code?

The most common causes of B2676 include: Open/short circuit in button C circuit; Oxidation of key contacts/connectors; Mechanical failure of the button; Wiring harness damage.

How do I fix a B2676 diagnostic trouble code?

To fix B2676: Check the integrity of the wiring harness (visually + with a multimeter). Clean the contacts of button C and the control unit connector. Replace the faulty button/keyboard. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2676?

Limited driving only, diagnose soon

How much does it cost to fix B2676?

The estimated repair cost for B2676 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat