OBD Guide
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B10C5

Trunk Unlock Pull Switch Signal Stuck High

B10C5 is an OBD-II diagnostic trouble code meaning: Trunk Unlock Pull Switch Signal Stuck High. Common causes: short circuit in the trunk release button circuit, malfunction of the button itself. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • The trunk opens spontaneously
  • The trunk release button does not respond to pressing
  • The malfunction indicator on the instrument panel is on

Causes

  • Short circuit in the trunk release button circuit
  • Malfunction of the button itself
  • Wiring harness damage
  • Body Control Module (BCM) Problems

How to Fix

  1. Check the trunk release button for sticking.
  2. Check the integrity of the wiring harness in the button area
  3. Check the voltage in the button circuit
  4. If necessary, replace the button or repair the wiring harness
  5. Reset the error and check if it returns

Related codes

B10C4B10C6

FAQ

What does the B10C5 code mean?

B10C5 is an OBD-II diagnostic trouble code that indicates: Trunk Unlock Pull Switch Signal Stuck High

What causes a B10C5 error code?

The most common causes of B10C5 include: Short circuit in the trunk release button circuit; Malfunction of the button itself; Wiring harness damage; Body Control Module (BCM) Problems.

How do I fix a B10C5 diagnostic trouble code?

To fix B10C5: Check the trunk release button for sticking.. Check the integrity of the wiring harness in the button area. Check the voltage in the button circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B10C5?

Limited driving only, diagnose soon

How much does it cost to fix B10C5?

The estimated repair cost for B10C5 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat