Engine-CodesGeneric – B2188

B2188 Code - Rear Wiper Select Switch 'E' Short To Ground

Quick Answer

The B2188 diagnostic trouble code (DTC) indicates that there is a short to ground in the rear wiper select switch 'E'. Common causes include Faulty rear wiper select switch 'E', Wiring issues such as frayed or damaged wires, Corrosion in the electrical connections related to the rear wiper system. 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
B2188 indicates Rear Wiper Select Switch 'E' Short To Ground.
Common causes
Common causes include Faulty rear wiper select switch 'E', Wiring issues such as frayed or damaged wires, Corrosion in the electrical connections related to the rear wiper system.
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.
Table of contents Created and updated by William Orellana on Sep 18, 2024
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Code B2188 Description

The B2188 diagnostic trouble code (DTC) indicates that there is a short to ground in the rear wiper select switch 'E'. 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 can lead to the rear wiper not functioning properly or at all, which can impact visibility during inclement weather conditions.

OBDII Code B2188 - Rear Wiper Select Switch 'E' Short To Ground
B2188 Code - Rear Wiper Select Switch 'E' Short To Ground

Common Causes of B2188

  1. Faulty rear wiper select switch 'E'.
  2. Wiring issues such as frayed or damaged wires.
  3. Corrosion in the electrical connections related to the rear wiper system.
  4. Water intrusion causing a short to ground.
  5. Defective rear wiper motor.

Symptoms of B2188

  1. Rear wiper not working or working intermittently.
  2. Rear wiper operating at incorrect speed or in the wrong direction.
  3. Rear wiper switch not responding when activated.
  4. Rear wiper fuse blowing repeatedly.
  5. Rear wiper motor overheating.

How to Fix B2188

  1. Begin by inspecting the rear wiper select switch 'E' for any visible damage or signs of a short circuit.
  2. Check the wiring harness connected to the switch for any frayed or damaged wires. Repair or replace as necessary.
  3. Inspect the rear wiper motor and its connections for any signs of damage or corrosion. Clean or replace components as needed.
  4. Test the rear wiper system after repairs to ensure proper functionality.
  5. Clear the DTC from the vehicle's computer using a diagnostic scanner.

Cost to Fix B2188

The typical repair costs for addressing a rear wiper select switch 'E' short to ground issue can range from $100 to $300, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to inquire with local auto repair shops for a more accurate estimate. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.

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Code B2188 Information for Specific Makes

  • B2188 Acura — Communication Line Driver Side MPCS Unit Cannot Receive UART Messages From Front Passenger Side MPCS Unit
  • B2188 Chrysler — Ignition Start Control Circuit Low
  • B2188 Dodge — Ignition Start Control Circuit Low
  • B2188 Honda — Communication Line Driver Side MPCS Unit Cannot Receive UART Messages From Front Passenger Side MPCS Unit
  • B2188 Jeep — Ignition Start Control Circuit Low
  • B2188 RAM — Ignition Start Control Circuit Low
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B2188 Code

1. What are the common symptoms of OBDII code B2188 (Rear Wiper Select Switch 'E' Short To Ground)?

The common symptoms include the rear wiper not functioning properly, the rear wiper turning on unexpectedly, or the rear wiper not turning off.

2. What are the possible causes of OBDII code B2188?

The code B2188 can be caused by a short to ground in the wiring of the rear wiper select switch 'E,' a faulty rear wiper switch, or a damaged wiring harness.

3. How can I diagnose OBDII code B2188?

To diagnose the code B2188, you can use a scan tool to read the fault codes, inspect the wiring and connectors related to the rear wiper switch, and perform a continuity test to check for shorts to ground.

4. What are the repair options for OBDII code B2188?

Repair options for code B2188 may include repairing or replacing damaged wiring, replacing the rear wiper select switch, or addressing any underlying electrical issues causing the short to ground.

5. Can I still drive my vehicle with OBDII code B2188?

It is generally safe to drive your vehicle with code B2188, but you may experience issues with the rear wiper function. It is recommended to address the problem promptly to avoid further electrical problems.

6. How much does it cost to repair OBDII code B2188?

The cost of repairing OBDII code B2188 can vary depending on the cause of the issue, the extent of the damage, and whether you choose to do the repair yourself or take it to a professional mechanic.

7. Is OBDII code B2188 easy to fix for DIYers?

Fixing OBDII code B2188 may be manageable for experienced DIYers with knowledge of automotive electrical systems. However, if you are not comfortable with electrical diagnostics and repairs, it is best to seek help from a professional.

8. Can extreme weather conditions trigger OBDII code B2188?

Extreme weather conditions can potentially worsen existing electrical issues that may lead to code B2188, such as moisture causing shorts in the wiring or switches. It is important to ensure your vehicle's electrical components are well-insulated.

9. Will resetting the OBDII system clear code B2188?

Resetting the OBDII system may temporarily clear the code B2188, but if the underlying issue causing the short to ground is not addressed, the code is likely to reappear. It is essential to diagnose and repair the root cause of the problem.

10. How long does it typically take to repair OBDII code B2188?

The repair time for OBDII code B2188 can vary based on the complexity of the issue and your experience with automotive repairs. It may take anywhere from a few hours to a day to diagnose and fix the problem.

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