B3722 Rear Wiper Relay Drive Circuit Low 2

OBD2 Code: B3722

Description: Rear wiper relay drive circuit low 2

Definition: This code indicates a problem with the rear wiper relay drive circuit, specifically that the voltage is lower than expected. This could be due to a faulty relay, wiring issues, or a malfunctioning control module.

B3722 – Rear Wiper Relay Drive Circuit Low 2: Minor

Common Causes

b3722 Rear Wiper Relay Drive Circuit Low 2

• Common Causes:
• Defective rear wiper relay
• Short circuit in the wiring of the rear wiper system
• Faulty rear wiper motor
• Corroded or loose electrical connections related to the rear wiper system

 

Common Misdiagnosis

OBD2 Code: B3722

Description: Rear Wiper Relay Drive Circuit Low 2

Common Misdiagnosis: Faulty rear wiper motor or relay is often misdiagnosed as a wiring issue.

 

Common Diagnostic Steps

OBD2 Code: B3722
Description: Rear Wiper Relay Drive Circuit Low

• Check the rear wiper relay for proper operation and replace if faulty.
• Inspect the wiring harness and connectors for damage or corrosion, and repair as necessary.
• Test the rear wiper motor for functionality; replace if it is not operating correctly.
• Verify that there is a proper ground connection to the rear wiper system.
• Use a multimeter to check for voltage at the rear wiper relay circuit; ensure it meets manufacturer specifications.
• If equipped, use a scan tool to clear the code and test drive to see if it returns.