B2183: Wiper High-Speed Switch Short to Ground
The B2183 code indicates that the body control module (BCM) has detected a short to ground in the front wiper selector switch circuit when the switch is in the high-speed (H) position. The BCM monitors the switch's voltage or resistance; when the switch is set to high speed, a specific value is expected. If the BCM reads an abnormally low voltage (near 0 volts), it interprets this as an unintended ground path and sets the code. This fault disables the high-speed wiper function to prevent system damage or erratic operation.
1. Commonly Affected Makes
2. Most Common Causes
- Short to ground in the wiper switch wiring harness
- Faulty or internally damaged wiper selector switch (combination switch)
- Loose connections, corroded terminals, or broken wires in the switch harness
- Moisture or corrosion in the switch connector causing a ground path
- Internal failure of the body control module (BCM)
3. Symptoms You Will Notice
- Front wipers do not operate at high speed
- Wipers may only work at low speed or intermittent settings
4. Step-by-Step Diagnosis
Scan for additional codes and verify B2183 is present.
Inspect the wiper switch connector and wiring for damage, corrosion, or shorts to ground.
Test the wiper switch resistance or voltage at the connector in the high-speed position.
Check for continuity to ground on the high-speed circuit; if present, isolate the short.
If wiring and switch are good, test the BCM output or replace the BCM as a last resort.
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, it is generally safe to drive, but the high-speed wiper function will be disabled. Avoid driving in heavy rain where high-speed wipers may be needed.
How much does it cost to fix?▼
Repair costs typically range from $100 to $400, depending on whether the issue is a simple wiring repair ($100-$200) or requires replacing the wiper switch ($150-$300) or BCM ($300-$800).