U0466

Invalid Data Received From HVAC Control Module - Rear

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Incorrect operation of the rear climate control unit
Lack of response to rear temperature adjustments
Error message on the climate control display
Rear fans run at constant speed
Uneven temperature distribution in the cabin

Causes

Malfunction of the rear climate control module
Problems with wiring to the rear module
Corrosion of contacts or connectors
Software error in the module
Damage to the CAN bus

How to Fix

Diagnostics of the rear climate control module
Checking the integrity of wiring and connectors
Resetting the error and checking for recurrence
Module software update
Replacing the rear climate control module if necessary

Related codes

U0465 U0467 U0468