What Does B1610 Mean?
This code indicates the Body Control Module (BCM) has detected a short to ground in the illuminated entry input circuit. The illuminated entry system automatically turns on interior and exterior lights when doors are unlocked or opened. The BCM has identified that the signal wire is making unwanted contact with vehicle ground, causing incorrect voltage readings below the expected threshold.
Common Causes
45%
Damaged or chafed wiring in door jamb or under door sill causing short to ground
30%
Faulty door switch or door ajar switch with internal short to ground
15%
Water intrusion or corrosion in BCM connector causing short circuit
10%
Defective Body Control Module with internal circuit failure
Diagnostic Steps
1
Step 1: Perform visual inspection of all door jamb wiring, door sill areas, and door ajar switches for visible damage, chafing, pinching, or corrosion. Pay special attention to areas where wiring flexes during door operation.
2
Step 2: Using a digital multimeter, disconnect the BCM connector and measure resistance from the illuminated entry input circuit pin to ground. Reading should be greater than 10k ohms; less than 1k ohm indicates a short to ground in the wiring harness.
3
Step 3: Disconnect each door switch connector individually while monitoring the resistance reading to isolate which circuit or switch is causing the short. The short will disappear when the faulty component is disconnected.
4
Step 4: If no short is found in external wiring or switches, inspect BCM connectors for water intrusion, corrosion, or pushed-out pins. Clean connectors with electrical contact cleaner and check for proper sealing.
5
Step 5: Repair or replace identified faulty wiring, connectors, or switches. Clear the code and cycle the illuminated entry system multiple times by locking/unlocking doors and verify the code does not return.
Estimated Repair Cost
$75 - $450
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected a short to ground in the illuminated entry input circuit. The illuminated entry system automatically turns on interior and exterior lights when doors are unlocked or opened. The BCM has identified that the signal wire is making unwanted ...
The most common cause of B1610 (Illuminated Entry Input Short Circuit To Ground) is: Damaged or chafed wiring in door jamb or under door sill causing short to ground
Typical repair costs for B1610 range from $75 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 convenience lighting features. The primary vehicle functions remain unaffected, though interior lights may not function properly when entering the vehicle.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1610 to identify the root cause.
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Quick Info
Category
Body
System
Body Control and Lighting System
Difficulty
Type
Manufacturer
Recommended Tools
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