B1619 – OBD-II DTC

OBD-II DTC B1619 – Wiper Rear Low Limit Input Circuit Failure

DTC B1619 meaning

DTC B1619 refers to a diagnostic trouble code indicating a failure in the rear wiper low limit input circuit. This code is generated when the vehicle’s onboard diagnostic system detects an issue with the signal from the rear wiper motor or its associated components, which may prevent the rear wiper from functioning correctly.

DTC B1619 symptoms

Common symptoms associated with DTC B1619 may include:

• Rear wiper not functioning at all
• Intermittent operation of the rear wiper
• Rear wiper operates but does not return to the home position
• Dashboard warning lights may illuminate

DTC B1619 causes

Several factors can lead to the occurrence of DTC B1619, including:

• Faulty rear wiper motor
• Damaged or corroded wiring in the rear wiper circuit
• Defective wiper control switch
• Issues with the body control module (BCM)
• Poor electrical connections or ground issues

DTC B1619 seriousness

DTC B1619 is considered a moderate issue. While it may not affect the vehicle’s overall drivability, it can impair visibility during inclement weather, posing a safety risk. Addressing this code promptly is advisable to ensure proper rear wiper functionality.

How to diagnose DTC B1619

To diagnose DTC B1619, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the rear wiper motor and its wiring for visible damage or corrosion.
3. Check the wiper control switch for proper operation.
4. Test the voltage and ground at the rear wiper motor connector.
5. Examine the body control module for any faults or issues.
6. Clear the DTC and perform a function test of the rear wiper.

How to fix DTC B1619 step-by-step instructions

To fix DTC B1619, follow these steps:

1. Inspect and repair any damaged wiring or connectors in the rear wiper circuit.
2. Replace the rear wiper motor if it is found to be faulty.
3. Test and replace the wiper control switch if necessary.
4. Ensure all ground connections are clean and secure.
5. Recheck the body control module for any updates or faults.
6. Clear the DTC using an OBD-II scanner and retest the rear wiper operation.

How to erase DTC B1619

To erase DTC B1619, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition key to the “On” position without starting the engine.
3. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the vehicle to verify that the code does not reappear.

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