B1436 – OBD-II DTC

OBD-II DTC B1436 – Wiper Hi/Low Speed Relay Coil Circuit Short To Battery

DTC B1436 meaning

DTC B1436 refers to a diagnostic trouble code indicating a problem with the wiper hi/low speed relay coil circuit. Specifically, it signifies a short circuit to battery voltage within the relay coil circuit. This can lead to improper functioning of the windshield wipers, affecting their ability to operate at different speeds as intended.

DTC B1436 symptoms

Common symptoms associated with DTC B1436 may include:

• Windshield wipers not functioning at all
• Wipers stuck in one position
• Wipers operating at only one speed
• Intermittent wiper function failure
• Dashboard warning lights illuminated

DTC B1436 causes

Several factors can lead to the occurrence of DTC B1436, including:

• Short circuit in the wiper relay coil circuit
• Faulty wiper relay
• Damaged wiring or connectors in the circuit
• Corrosion or poor connections in the electrical system
• Malfunctioning windshield wiper switch

DTC B1436 seriousness

The seriousness of DTC B1436 can vary, but it is generally considered a moderate issue. While it may not pose an immediate safety risk, non-functioning wipers can significantly impair visibility during rain or adverse weather conditions, increasing the risk of accidents. Therefore, it is advisable to address this code promptly.

How to diagnose DTC B1436

To diagnose DTC B1436, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Inspect the wiper relay and its connections for any visible damage or corrosion.
3. Check the wiring harness for shorts, breaks, or frayed wires.
4. Test the wiper switch for proper operation.
5. Measure voltage and ground at the relay coil circuit to identify any discrepancies.

How to fix DTC B1436 step-by-step instructions

To fix DTC B1436, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety.
2. Inspect and repair any damaged wiring or connectors in the wiper relay circuit.
3. Replace the faulty wiper relay if necessary.
4. Test the wiper switch and replace it if it is malfunctioning.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test the wipers to ensure they operate correctly at all speeds.

How to erase DTC B1436

To erase DTC B1436, 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 “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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