B1622 Code - Wiper Rear Low Limit Input Circuit Short To Ground
Quick Answer
The B1622 diagnostic trouble code indicates that there is a short to ground in the rear wiper low limit input circuit. Common causes include Damaged wiring in the rear wiper low limit input circuit, Corrosion in the electrical connections related to the rear wiper system, Faulty rear wiper motor. 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
- B1622 indicates Wiper Rear Low Limit Input Circuit Short To Ground.
- Common causes
- Common causes include Damaged wiring in the rear wiper low limit input circuit, Corrosion in the electrical connections related to the rear wiper system, Faulty rear wiper motor.
- 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 B1622 Description
The B1622 diagnostic trouble code indicates that there is a short to ground in the rear wiper low limit input circuit. This means that there is an issue with the electrical connection that controls the rear wiper blade's movement. The low limit input circuit is responsible for ensuring that the wiper blade does not go beyond its designated range of motion. When this circuit is shorted to ground, it can cause the rear wiper to malfunction or stop working altogether.
Common Causes of B1622
- Damaged wiring in the rear wiper low limit input circuit
- Corrosion in the electrical connections related to the rear wiper system
- Faulty rear wiper motor
- Short circuit in the rear wiper switch or control module
- Water intrusion causing electrical issues in the rear wiper system
Symptoms of B1622
- Rear wiper blade not moving or erratic movement
- Rear wiper blade getting stuck in one position
- Rear wiper blade moving beyond its usual range of motion
- Rear wiper not responding to control inputs
- Warning light on the dashboard related to rear wiper system
How to Fix B1622
- Diagnose the exact location of the short to ground in the rear wiper low limit input circuit using a multimeter.
- Inspect and repair any damaged wiring or connections in the rear wiper system.
- Test the rear wiper motor for proper functionality and replace if necessary.
- Check the rear wiper switch and control module for any faults and replace if needed.
- Clear the diagnostic trouble code from the vehicle's computer system and test the rear wiper system to ensure proper operation.
Cost to Fix B1622
The cost of repairing a short to ground in the rear wiper low limit input circuit can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the repair cost for this issue can range from $100 to $300, including parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to get a quote from a trusted mechanic before proceeding with the repair.
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Code B1622 Information for Specific Makes
- B1622 Lexus — Lost Communication With Side Airbag Sensor Right
- B1622 Scion — Lost Communication With Side Airbag Sensor Right
- B1622 Toyota — Lost Communication With Side Airbag Sensor Right
Frequently Asked Questions about B1622 Code
What does OBDII code B1622 mean?
OBDII code B1622 refers to a malfunction in the rear wiper low limit input circuit, indicating a short to ground condition.
What symptoms might indicate a B1622 code?
Common symptoms may include the rear wiper not functioning, erratic wiper operation, or the rear wiper not returning to its parked position.
What could cause the B1622 code to trigger?
Possible causes include damaged wiring, a faulty rear wiper motor, a defective wiper switch, or a short circuit in the rear wiper's control circuit.
How can I diagnose B1622 effectively?
To diagnose B1622, start by visually inspecting the wiring and connectors for damage. Use a multimeter to check for continuity and resistance in the circuit.
What should I do if I find a wiring issue causing B1622?
If you find damaged wiring, repair or replace the affected wires or connectors to restore proper circuit function.
Can I fix a faulty rear wiper motor causing B1622 myself?
If you are comfortable with automotive repairs, you can replace the rear wiper motor yourself; otherwise, consider seeking professional help.
What tools do I need to troubleshoot and repair B1622?
Basic tools include a multimeter, wire strippers, a soldering iron (if splicing wires), and a socket set for removing components.
Is it safe to drive with a B1622 code?
While it may not affect overall vehicle safety, a malfunctioning rear wiper can reduce visibility in adverse weather, so it’s best to address the issue promptly.
Will clearing the B1622 code fix the problem?
Clearing the code will not fix the underlying issue; you must address the root cause to ensure the rear wiper operates correctly.
How much might it cost to repair the issue related to B1622?
Repair costs can vary widely depending on the cause; simple wiring repairs may be inexpensive, while replacing a motor could cost more due to parts and labor.
Discuss the causes and fixes for B1622 OBDII Code
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