B2426 – OBD-II DTC

OBD-II DTC B2426 – Passenger Solar Radiation Sensor Circuit Open

DTC B2426 meaning

DTC B2426 refers to a diagnostic trouble code indicating an issue with the passenger solar radiation sensor circuit. This sensor is responsible for measuring the amount of sunlight entering the vehicle, which helps in adjusting the climate control system accordingly. An “open” circuit means that there is a break in the electrical connection, preventing the sensor from sending data to the vehicle’s control module.

DTC B2426 symptoms

Common symptoms associated with DTC B2426 may include:

• Inconsistent or incorrect climate control operation
• Increased cabin temperature or discomfort
• Warning lights illuminated on the dashboard
• Failure of the automatic climate control system to respond to sunlight changes

DTC B2426 causes

Several factors can lead to the occurrence of DTC B2426, including:

• Faulty passenger solar radiation sensor
• Damaged wiring or connectors in the sensor circuit
• Corrosion or poor connections at the sensor or control module
• Issues with the vehicle’s control module itself

DTC B2426 seriousness

DTC B2426 is considered a moderate issue. While it may not pose an immediate safety risk, it can lead to discomfort due to improper climate control. Additionally, ignoring this code may result in further electrical issues or damage to the climate control system over time.

How to diagnose DTC B2426

To diagnose DTC B2426, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the passenger solar radiation sensor and its wiring for visible damage.
3. Check the electrical connections for corrosion or looseness.
4. Test the sensor’s resistance and voltage output according to manufacturer specifications.
5. Examine the vehicle’s control module for any related fault codes.

How to fix DTC B2426 step-by-step instructions

To fix DTC B2426, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety.
2. Inspect and repair any damaged wiring or connectors in the solar radiation sensor circuit.
3. If the sensor is faulty, replace it with a new one.
4. Reconnect all electrical connections securely.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test the climate control system to ensure proper operation.

How to erase DTC B2426

To erase DTC B2426, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the vehicle’s ignition 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 ensure the code does not return.

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