B2187 Code - Rear Wiper Select Switch 'B' Short To Ground
Quick Answer
The diagnostic trouble code B2187 indicates that there is a short to ground in the rear wiper select switch 'B'. Common causes include Water intrusion into the rear wiper switch causing a short to ground, Wiring harness damage or chafing leading to a short circuit, Faulty rear wiper motor drawing excess current. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B2187 indicates Rear Wiper Select Switch 'B' Short To Ground.
- Common causes
- Common causes include Water intrusion into the rear wiper switch causing a short to ground, Wiring harness damage or chafing leading to a short circuit, Faulty rear wiper motor drawing excess current.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code B2187 Description
The diagnostic trouble code B2187 indicates that there is a short to ground in the rear wiper select switch 'B'. This switch is responsible for controlling the rear wiper on the vehicle. When a short to ground occurs, it means that there is an unintended connection between the switch and the vehicle's ground, causing an electrical malfunction. This issue can prevent the rear wiper from functioning properly, affecting visibility and safety while driving in adverse weather conditions.
Common Causes of B2187
- Water intrusion into the rear wiper switch causing a short to ground.
- Wiring harness damage or chafing leading to a short circuit.
- Faulty rear wiper motor drawing excess current.
- Corrosion on electrical connectors affecting the switch operation.
- Manufacturing defect in the rear wiper switch causing a short circuit.
Symptoms of B2187
- Rear wiper not working or operating erratically.
- Rear wiper turning on or off by itself.
- Fuse for the rear wiper blowing repeatedly.
- Rear wiper motor making unusual noises.
- Rear wiper not responding to switch inputs.
How to Fix B2187
- Begin by disconnecting the vehicle's battery to prevent any electrical mishaps.
- Inspect the rear wiper switch and wiring harness for any visible damage or signs of water intrusion.
- Test the rear wiper motor for proper operation and excessive current draw.
- Repair or replace any damaged wiring or connectors in the rear wiper circuit.
- Replace the rear wiper select switch 'B' if it is found to be faulty and causing the short to ground.
Cost to Fix B2187
The cost of repairing a rear wiper select switch 'B' short to ground can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the parts for this repair can range from $50 to $150, while the labor costs can be around $100 to $200. However, it is important to note that these are rough estimates, and actual repair costs may differ based on the vehicle's make and model, the location of the repair shop, and any additional services required. It is recommended to consult with a professional mechanic for a more accurate cost estimate.
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Code B2187 Information for Specific Makes
- B2187 Acura — Communication Line Driver Side MPCS Unit Cannot Send UART Messages
- B2187 Buick — Power Seat Switch Circuit
- B2187 Cadillac — Power Seat Switch Circuit
- B2187 Chevrolet — Power Seat Switch Circuit
- B2187 GMC — Power Seat Switch Circuit
- B2187 Honda — Communication Line Driver Side MPCS Unit Cannot Send UART Messages
Frequently Asked Questions about B2187 Code
What does the OBDII code B2187 mean?
B2187 indicates a short circuit to ground in the rear wiper select switch circuit 'B', which can affect the operation of the rear wiper.
What are common symptoms of a B2187 code?
Common symptoms include the rear wiper not functioning, intermittent operation of the rear wiper, or the rear wiper operating unexpectedly.
What can cause the B2187 code to trigger?
Potential causes include a faulty rear wiper switch, damaged wiring or connectors in the rear wiper circuit, or a malfunctioning Body Control Module (BCM).
How can I diagnose the B2187 code?
Start by inspecting the rear wiper switch and associated wiring for damage. Use a multimeter to check for continuity and ensure the switch is functioning correctly.
What should I check first if I have a B2187 code?
Begin with a visual inspection of the wiring and connectors related to the rear wiper switch for any signs of wear, corrosion, or damage.
Can I drive my vehicle with a B2187 code?
While you can technically drive the vehicle, the rear wiper may not function, which can be a safety concern in adverse weather conditions.
What are some repair options for a B2187 code?
Repairs may include replacing a faulty rear wiper switch, repairing damaged wiring, or replacing the Body Control Module if it is determined to be the source of the problem.
Will clearing the B2187 code fix the problem?
Clearing the code may temporarily turn off the check engine light, but if the underlying issue is not resolved, the code is likely to return.
How much does it typically cost to fix a B2187 code?
Repair costs can vary widely depending on the cause; simple wiring repairs may cost less, while replacing components like the BCM could be more expensive.
Can a bad rear wiper motor cause a B2187 code?
While a bad rear wiper motor can lead to wiper issues, the B2187 code specifically pertains to the select switch circuit. It's essential to diagnose the switch and wiring first.
Discuss the causes and fixes for B2187 OBDII Code
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