B1908 Hyundai Code - Rear Sensor PWM Signal Fault
Quick Answer
The B1908 code for Hyundai vehicles indicates a Rear Sensor PWM Signal Fault. Common causes include Faulty rear sensor, Wiring issues or shorts in the sensor circuit, Corrosion or damage to sensor connectors. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B1908 Hyundai indicates Rear Sensor PWM Signal Fault.
- Common causes
- Common causes include Faulty rear sensor, Wiring issues or shorts in the sensor circuit, Corrosion or damage to sensor connectors.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code B1908 Hyundai Description
The B1908 code for Hyundai vehicles indicates a Rear Sensor PWM Signal Fault. This fault occurs when there is a problem with the pulse width modulation (PWM) signal being sent by one of the rear sensors in the vehicle's system. The rear sensors are crucial components of the vehicle's safety systems, particularly in assisting with parking and backing up. When the PWM signal from a rear sensor is faulty, it can lead to issues with the vehicle's ability to accurately detect obstacles or objects behind it, potentially compromising the safety of the driver, passengers, and pedestrians.
Common Causes of B1908 Hyundai
- Faulty rear sensor
- Wiring issues or shorts in the sensor circuit
- Corrosion or damage to sensor connectors
- Malfunctioning control module
- Electrical issues in the vehicle's system
Symptoms of B1908 Hyundai
- Malfunctioning rear parking assist system
- Inaccurate or erratic readings from rear sensors
- Warning lights on the dashboard related to the parking assist system
- Difficulty in backing up or parking due to lack of sensor assistance
How to Fix B1908 Hyundai
- Begin by conducting a thorough inspection of the rear sensors, wiring, and connectors to identify any visible damage or issues.
- Use a multimeter to test the continuity and voltage of the sensor circuit to pinpoint any electrical faults.
- Replace any faulty rear sensors or damaged wiring/connectors as needed.
- Reset the vehicle's system and clear the diagnostic trouble codes to see if the issue has been resolved.
- If the problem persists, further diagnostic testing may be required to identify any underlying issues with the control module or other components.
Cost to Fix B1908 Hyundai
The typical repair costs for addressing a Rear Sensor PWM Signal Fault can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of replacing a rear sensor or repairing wiring/connectors can range from $150 to $300, including parts and labor. However, if the problem is more complex and requires additional diagnostic testing or the replacement of the control module, the repair costs could increase significantly.
Need more information about the B1908 Hyundai code?
Need more information on how to fix the B1908 Hyundai code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1908 Hyundai code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B1908 Hyundai Code
1. What are the common symptoms of OBDII code B1908 Hyundai indicating a Rear Sensor PWM Signal Fault?
The common symptoms include malfunctioning rear parking sensors, intermittent or constant beeping when reversing, and a disabled backup camera.
2. What causes the OBDII code B1908 Hyundai Rear Sensor PWM Signal Fault?
The code B1908 typically indicates a fault in the PWM (Pulse Width Modulation) signal from one of the rear parking sensors, which can be caused by sensor damage, wiring issues, or sensor calibration problems.
3. How can I diagnose the OBDII code B1908 Hyundai Rear Sensor PWM Signal Fault?
Diagnosing the issue involves using a diagnostic scan tool to read the fault codes, conducting a visual inspection of the rear parking sensors and wiring, and performing sensor calibration tests.
4. Can I repair the OBDII code B1908 Hyundai Rear Sensor PWM Signal Fault myself?
While some DIY enthusiasts may be able to address the issue by checking and cleaning the sensors and wiring connections, it is recommended to consult a professional technician for proper diagnosis and repair.
5. Is it safe to drive with the OBDII code B1908 Hyundai Rear Sensor PWM Signal Fault?
It is generally safe to drive with this fault, but you may experience inconvenience due to malfunctioning parking sensors, so it is advisable to get the issue resolved promptly.
6. How much does it cost to repair the OBDII code B1908 Hyundai Rear Sensor PWM Signal Fault?
The cost of repair can vary depending on the exact cause of the fault, the need for sensor replacement, and labor charges, so it is best to get a repair estimate from a trusted mechanic.
7. Can the OBDII code B1908 Hyundai Rear Sensor PWM Signal Fault be reset without repairs?
Resetting the code without addressing the underlying issue will not solve the problem in the long term, as the fault will likely reoccur until the root cause is fixed.
8. Are there any preventive measures to avoid the OBDII code B1908 Hyundai Rear Sensor PWM Signal Fault?
Regularly inspecting and cleaning the parking sensors, ensuring proper wiring connections, and avoiding physical damage to the sensors can help prevent this fault from occurring.
9. Will the OBDII code B1908 Hyundai Rear Sensor PWM Signal Fault affect vehicle performance?
This fault typically does not affect the performance of the vehicle but may impact the functionality of the rear parking assistance system, leading to inconvenience while parking.
10. How long does it take to repair the OBDII code B1908 Hyundai Rear Sensor PWM Signal Fault?
The repair time can vary depending on the extent of the issue and the availability of parts, but in most cases, a skilled technician can diagnose and repair the fault within a few hours to a day.
Discuss the causes and fixes for B1908 Hyundai OBDII Code
Code B1908 Hyundai comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.