OBD Guide
ENFRDEESPT

B18DE

Power Liftgate Handle Switch Circuit Low

B18DE is an OBD-II diagnostic trouble code meaning: Power Liftgate Handle Switch Circuit Low. Common causes: broken or damaged wires in the switch circuit, poor contact in circuit connectors. Estimated repair cost: $56–167.

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

Symptoms

  • Incorrect operation of the rear door electric drive
  • The rear door does not open or close using the button
  • Rear door indicator flashing on instrument panel

Causes

  • Broken or damaged wires in the switch circuit
  • Poor contact in circuit connectors
  • Rear door handle switch malfunction
  • Problems with the rear door power control unit

How to Fix

  1. Check the integrity of the wires in the handle switch circuit
  2. Clean and check contacts in circuit connectors
  3. Check the operation of the rear door handle switch
  4. If necessary, replace the switch or wires
  5. Check the rear door electric drive control unit

Related codes

B18DFB18E0B18E1

FAQ

What does the B18DE code mean?

B18DE is an OBD-II diagnostic trouble code that indicates: Power Liftgate Handle Switch Circuit Low

What causes a B18DE error code?

The most common causes of B18DE include: Broken or damaged wires in the switch circuit; Poor contact in circuit connectors; Rear door handle switch malfunction; Problems with the rear door power control unit.

How do I fix a B18DE diagnostic trouble code?

To fix B18DE: Check the integrity of the wires in the handle switch circuit. Clean and check contacts in circuit connectors. Check the operation of the rear door handle switch. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B18DE?

Limited driving only, diagnose soon

How much does it cost to fix B18DE?

The estimated repair cost for B18DE is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat