B3142

Left Front Unlock Switch Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–56 (est.)

Symptoms

Left front door unlock button not working
Problems with central locking
Flashing warning lights

Causes

Open or short circuit in wiring harness
Faulty door unlock switch
Oxidized contacts
Eating problems
Body Control Module (BCM) Malfunction

How to Fix

Check the integrity of the wiring harness
Check the condition of the switch contacts
Test the door unlock switch
Check circuit power
Replace switch or BCM if necessary

Related codes

B3141 B3143 B3144