What Does B1533 Mean?
B1533 indicates the Body Control Module (BCM) has detected an electrical fault in the Driver Information Center switch circuit. This code relates to the control switches used to navigate menus and settings on the vehicle's instrument cluster display. The BCM has identified an open circuit, short to ground, short to power, or excessive resistance in the DIC switch wiring or switch assembly itself.
Common Causes
45%
Faulty Driver Information Center switch assembly with worn contacts or internal failure
30%
Damaged or corroded wiring harness between BCM and DIC switch, including chafed wires or broken connectors
15%
Loose or corroded electrical connector at DIC switch or BCM interface
10%
Body Control Module internal circuit failure or software corruption
Diagnostic Steps
1
Step 1: Perform visual inspection of DIC switch assembly for physical damage, stuck buttons, or moisture intrusion. Test each button function manually while observing for erratic operation or no response.
2
Step 2: Using a digital multimeter, check for proper voltage supply (typically 5V or 12V reference) at the DIC switch connector with ignition on. Verify ground circuit continuity to ensure less than 0.5 ohms resistance.
3
Step 3: With switch connector still disconnected, measure resistance values of each switch position by pressing buttons and monitoring resistance changes. Compare readings to manufacturer specifications (typically ranging from 0 ohms to several thousand ohms depending on button pressed).
4
Step 4: Inspect wiring harness from DIC switch through steering column to BCM for signs of damage, chafing, or pinch points. Perform continuity test on each circuit wire with harness disconnected at both ends.
5
Step 5: Check BCM connector for corrosion, bent pins, or loose fit. Clean contacts with electrical contact cleaner if necessary and ensure proper connector retention.
6
Step 6: If all circuits test normal, clear codes and monitor for recurrence. If code returns immediately with no external faults found, suspect BCM internal failure requiring replacement or reprogramming.
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
B1533 indicates the Body Control Module (BCM) has detected an electrical fault in the Driver Information Center switch circuit. This code relates to the control switches used to navigate menus and settings on the vehicle's instrument cluster display. The BCM has identified an open circuit, short to ...
The most common cause of B1533 (Driver Information Center (DIC) Switch Circuit) is: Faulty Driver Information Center switch assembly with worn contacts or internal failure
Typical repair costs for B1533 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving as this does not affect primary vehicle operation, braking, or steering. The only impact is inability to access or change display information on the instrument cluster, which is a convenience issue rather than a safety concern.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1533 to identify the root cause.
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Quick Info
Category
Body
System
Body Control System
Difficulty
Type
Manufacturer
Recommended Tools
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