What Does B1525 Mean?
DTC B1525 indicates the Body Control Module (BCM) has detected an electrical fault in the Driver Information Center (DIC) switch circuit. This code is triggered when the BCM monitors abnormal voltage, resistance, or signal communication from the buttons or controls used to navigate the vehicle's information display. The fault could be an open circuit, short to ground, short to power, or high resistance in the switch assembly or its wiring.
Common Causes
45%
Faulty Driver Information Center switch assembly with internal contact wear or failure
30%
Damaged, corroded, or loose wiring harness connector at the DIC switch
15%
Broken or chafed wires in the DIC switch circuit between switch and BCM
10%
Failed Body Control Module with internal circuit failure
Diagnostic Steps
1
Step 1: Perform a visual inspection of the DIC switch assembly and all accessible wiring for physical damage, loose connections, or signs of water intrusion. Check connector terminals for corrosion, bent pins, or debris.
2
Step 2: Using a digital multimeter, backprobe the DIC switch connector with ignition ON and measure voltage supply (typically 5V or 12V reference) and ground circuits. Verify readings match manufacturer specifications for the switch circuit.
3
Step 3: Test the DIC switch resistance values by disconnecting the switch connector and measuring resistance across switch terminals while pressing each button. Compare readings to specifications (typically 0-5000 ohms depending on button pressed).
4
Step 4: Check continuity of all wires between the DIC switch connector and the BCM connector using a multimeter. Look for opens, shorts to ground (infinite resistance to ground when disconnected), or shorts to power.
5
Step 5: If all wiring and switch tests pass, monitor live data using the scan tool while actuating the DIC switches to verify the BCM is receiving switch input signals correctly. Replace the BCM only if all other components test good.
6
Step 6: After repair, clear codes, perform a BCM relearn procedure if required, cycle the ignition, and test all DIC switch functions to confirm proper operation and verify the code does not return.
Estimated Repair Cost
$100 - $450
Parts + labor, varies by vehicle and location
DTC B1525 indicates the Body Control Module (BCM) has detected an electrical fault in the Driver Information Center (DIC) switch circuit. This code is triggered when the BCM monitors abnormal voltage, resistance, or signal communication from the buttons or controls used to navigate the vehicle's inf...
The most common cause of B1525 (Driver Information Center (DIC) Switch Circuit) is: Faulty Driver Information Center switch assembly with internal contact wear or failure
Typical repair costs for B1525 range from $100 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This code does not affect vehicle safety or drivability and it is safe to continue driving. The only consequence is loss of ability to control or navigate the Driver Information Center display, which may prevent viewing trip data, tire pressures, or other convenience information.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1525 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Body
System
Body Control and Driver Information System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
