What Does B2183 Mean?
This diagnostic trouble code indicates that the Body Control Module (BCM) has detected an abnormal short circuit to ground in the front wiper select switch circuit 'H'. The BCM monitors the wiper switch inputs and has identified that one of the wiper mode selection circuits is reading a voltage lower than expected, indicating an unintended ground connection. This prevents the wiper system from functioning correctly as the BCM cannot properly interpret the driver's wiper speed or mode selections.
Common Causes
45%
Damaged or chafed wiring harness between wiper switch and BCM causing short to ground
30%
Failed multifunction switch or wiper switch assembly with internal short circuit
15%
Corroded or water-damaged wiper switch connector pins creating ground path
10%
Failed BCM with internal circuit fault on wiper switch input channel
Diagnostic Steps
1
Step 1: Perform visual inspection of the multifunction switch/wiper switch assembly and all accessible wiring harnesses for obvious damage, chafing against metal surfaces, or evidence of water intrusion at connectors
2
Step 2: Disconnect the wiper switch connector at the multifunction switch assembly and use a digital multimeter to measure resistance between the 'H' circuit terminal (consult wiring diagram for pin identification) and ground with switch disconnected; reading should be infinite/open circuit (OL), any continuity indicates wiring harness short
3
Step 3: If wiring shows no short, reconnect switch and backprobe the 'H' circuit at the BCM connector while operating the wiper switch through all positions; voltage should vary between 0V and battery voltage depending on switch position, constant 0V indicates switch internal short
4
Step 4: Inspect and test all intermediate connectors along the wiper switch circuit for corrosion, pushed-out terminals, or water damage; clean with electrical contact cleaner and apply dielectric grease if corrosion found
5
Step 5: If wiring and connectors test good, replace the multifunction switch assembly and retest; if code persists after switch replacement, BCM replacement may be required
6
Step 6: Clear codes, cycle wiper switch through all positions multiple times, and perform test drive to verify repair; monitor for code recurrence
Estimated Repair Cost
$120 - $650
Parts + labor, varies by vehicle and location
This diagnostic trouble code indicates that the Body Control Module (BCM) has detected an abnormal short circuit to ground in the front wiper select switch circuit 'H'. The BCM monitors the wiper switch inputs and has identified that one of the wiper mode selection circuits is reading a voltage lowe...
The most common cause of B2183 (Front Wiper Select Switch "H" Short to Ground) is: Damaged or chafed wiring harness between wiper switch and BCM causing short to ground
Typical repair costs for B2183 range from $120 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive in clear weather conditions, but inoperative or intermittently functioning wipers create a significant safety hazard in rain or snow. Repair should be completed before driving in inclement weather or as soon as possible to ensure visibility safety systems function properly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B2183 to identify the root cause.
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Quick Info
Category
Body
System
Wiper/Washer System
Difficulty
Type
Generic (SAE)
Recommended Tools
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