C0378

Front Axle Switch Circuit Signal Invalid

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Incorrect operation of the stabilization system
Activating the Check Engine Light
Problems with switching all-wheel drive modes

Causes

Open or short circuit in wiring harness
Oxidation of switch contacts
Front axle switch malfunction
Problems with the ECU

How to Fix

Check the integrity of the wiring harness
Clean switch contacts
Check the functionality of the switch
Replace switch if necessary
Check the ECU for errors

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