The OBD code B1508 for Toyota indicates an issue with the Turn Signal / Hazard Flasher circuit.
Symptoms include the Engine Light being ON.
Common causes are a faulty Turn Signal / Hazard Flasher Bulb or harness issues.
This problem is not severe but should be addressed promptly.
A possible fix is to inspect and repair any damaged components or wiring connections related to the Turn Signal / Hazard Flasher circuit.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
Symptoms of the Toyota b1508 OBD Code
The Toyota B1508 fault code typically triggers when there is an issue with the vehicle’s airbag system.
- Symptoms: Airbag warning light may illuminate.
- SRS system may not function properly.
- Vehicle may fail a safety inspection due to the airbag system fault.
Causes of the Toyota b1508 OBD Code
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Possible triggers for Toyota B1508 include faulty air mix control motor, wiring issues, or HVAC control module problems.
- B1508 can be caused by a faulty Turn Signal / Hazard Flasher Bulb.
- A Turn Signal / Hazard Flasher harness that is open or shorted.
- A Turn Signal / Hazard Flasher circuit with poor electrical connection.
- A faulty Combination Meter Assembly.
Fixing Toyota Error Code b1508 Step By Step
Address the issue by inspecting and repairing the driverside airbag squib circuit in a Toyota vehicle.
- To fix Toyota OBDII code B1508, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the air mix damper control servo motor circuit.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If no issues are found with the wiring and connectors, proceed to test the air mix damper control servo motor for proper operation.
- Replace the servo motor if it is faulty.
- Clear the fault code using a scan tool and perform a road test to ensure the issue is resolved.
Cost Of Fixing Toyota b1508 Fault Code
The repair for Toyota fault code B1508 may involve replacing the airbag sensor assembly.
The cost to diagnose and fix Toyota OBD code B1508 depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the total cost could be between $75 and $150. Actual cost may vary based on shop rates and the complexity of the repair.
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Details of the Toyota b1508 OBD Code
Toyota fault code B1508 relates to a malfunction in the driver’s side airbag circuit.
Code B1508 for Toyota means Sunload Sensor Circuit Failure.
This code is triggered by the HVAC (Heating, Ventilation, and Air Conditioning) system control module when it detects a malfunction in the sunload sensor circuit.
The sunload sensor measures the intensity of sunlight entering the vehicle and helps the HVAC system adjust the temperature and airflow accordingly to maintain comfort inside the vehicle.
Mechanic’s Tech Notes
For Toyota B1508, check for faults in the airbag sensor assembly circuit.
To diagnose and fix OBDII code Toyota B1508, start by visually inspecting the wiring harness and connectors related to the transmission control module (TCM).
Look for any damage or corrosion on the connector pins.
Use a multimeter to check the power and ground connections to the TCM.
Additionally, use a scan tool to confirm if the TCM is communicating over the Controller Area Network (CAN) network.
If necessary, consider reprogramming or reflashing the TCM.
This process can help identify and address issues related to the TCM that may be triggering the B1508 trouble code.
FAQ
OBD code B1508 in a Toyota indicates an issue with the turn signal/hazard flasher circuit. Check bulbs, wiring, and connectors for faults.
Diagnose OBD code B1508 in Toyota for Engine Light ON. Check Turn Signal/Hazard Flasher bulb, harness, and connections. Inspect Combination Meter Assembly and wiring for issues.
To fix OBD code B1508 in a Toyota: Check turn signal/hazard flasher bulb, harness, and connections. Inspect Combination Meter Assembly and wiring for damage or corrosion.
Wrap Up
If your Toyota is displaying OBDII code b1508, you may experience issues with the airbag system, such as the airbag warning light staying on.
This code typically indicates a problem with the airbag sensor assembly, faulty wiring connections, or a malfunctioning airbag control module.
To address Toyota OBDII code b1508, start by inspecting the wiring harness and connectors related to the airbag system.
Check for any damaged wires, loose connections, or corrosion.
Test the airbag sensor assembly and the airbag control module for proper functionality.
Replace any faulty components as needed
