B2190 – OBD-II DTC

OBD-II DTC B2190 – Window Passenger Rear Remote Up Switch Short to Battery

DTC B2190 meaning

DTC B2190 refers to a diagnostic trouble code indicating a short circuit condition in the passenger rear window remote up switch. This code is generated when the vehicle’s onboard diagnostic system detects that the switch is continuously receiving a voltage signal, suggesting a malfunction in the switch or its wiring.

DTC B2190 symptoms

Common symptoms associated with DTC B2190 may include:

• The passenger rear window may not operate correctly.
• The window may be stuck in the up or down position.
• The switch may feel warm to the touch due to continuous power.
• Other window switches may also exhibit erratic behavior.
• Dashboard warning lights may illuminate.

DTC B2190 causes

Several factors can lead to the occurrence of DTC B2190, including:

• A faulty passenger rear window remote up switch.
• Damaged or frayed wiring in the window control circuit.
• Corrosion or poor connections in the switch or wiring harness.
• Issues with the body control module (BCM) that manages window operations.
• Short circuits caused by moisture intrusion or foreign objects.

DTC B2190 seriousness

DTC B2190 is considered a moderate issue. While it may not prevent the vehicle from operating, it can lead to further electrical problems or window malfunctions. Ignoring this code may result in additional damage to the window system or other related components.

How to diagnose DTC B2190

To diagnose DTC B2190, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B2190 code.
2. Inspect the passenger rear window remote up switch for physical damage.
3. Check the wiring and connectors for signs of wear, corrosion, or shorts.
4. Test the switch with a multimeter to ensure it operates correctly.
5. Examine the body control module for any fault codes or issues.

How to fix DTC B2190 step-by-step instructions

To fix DTC B2190, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety while working on electrical components.
2. Remove the passenger rear window remote up switch from the door panel.
3. Inspect the switch for damage and replace it if necessary.
4. Examine the wiring harness for any signs of damage or shorts and repair as needed.
5. Reconnect all connectors and ensure they are secure.
6. Reinstall the switch and door panel, then reconnect the battery.
7. Clear the DTC using an OBD-II scanner and test the window operation.

How to erase DTC B2190

To erase DTC B2190, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the trouble codes section on the scanner.
4. Select the option to clear or erase the codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and start the vehicle to ensure the code does not return.

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