What Does B1528 Mean?
B1528 indicates the Body Control Module (BCM) has detected an abnormal electrical condition in the Driver Information Center (DIC) switch circuit. This code specifically monitors the switch assembly that allows the driver to navigate menus and control functions on the instrument cluster display. The BCM has identified either an open circuit, short to ground, short to power, or excessive resistance in the switch wiring or the switch itself.
Common Causes
45%
Faulty DIC switch assembly with worn contacts or internal failure
30%
Damaged or corroded wiring harness between BCM and DIC switch
15%
Loose or corroded electrical connector at DIC switch or BCM
10%
Body Control Module internal fault or water damage
Diagnostic Steps
1
Step 1: Perform visual inspection of DIC switch assembly on steering wheel or dashboard for physical damage, cracks, or signs of liquid intrusion. Check for stuck buttons or abnormal tactile feel when pressing switches.
2
Step 2: Disconnect DIC switch connector and inspect terminals for corrosion, pushed-back pins, or moisture. Clean with electrical contact cleaner if necessary and verify pin tension with probe tool.
3
Step 3: Using multimeter, test DIC switch resistance values according to manufacturer specifications for each button position. Compare readings to normal switch matrix values (typically 0-5000 ohms range depending on button pressed).
4
Step 4: Check continuity and resistance of wiring harness between DIC switch connector and BCM connector. Test for shorts to ground and shorts to power using multimeter on all relevant circuits (typically 2-5 wires).
5
Step 5: With switch disconnected, monitor live data on scan tool while manually jumping switch circuit pins at BCM connector to verify BCM can properly read switch inputs and rule out BCM internal fault.
6
Step 6: If all circuits test normal but code persists, replace DIC switch assembly and clear codes. Perform function test of all DIC menu navigation and verify proper operation before returning vehicle to service.
Estimated Repair Cost
$120 - $450
Parts + labor, varies by vehicle and location
B1528 indicates the Body Control Module (BCM) has detected an abnormal electrical condition in the Driver Information Center (DIC) switch circuit. This code specifically monitors the switch assembly that allows the driver to navigate menus and control functions on the instrument cluster display. The...
The most common cause of B1528 (Driver Information Center (DIC) Switch Circuit) is: Faulty DIC switch assembly with worn contacts or internal failure
Typical repair costs for B1528 range from $120 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving as this affects only the driver information center controls and does not impact vehicle operation or safety systems. Repair at convenience, though loss of ability to access trip computer, settings, and vehicle information displays may be inconvenient.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1528 to identify the root cause.
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Quick Info
Category
Body
System
Body Controls and Driver Information Display
Difficulty
Type
Manufacturer
Recommended Tools
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