Quick Answer
B0118 means: B0118 indicates high voltage in the airbag sensor circuit, signaling possible issues within the airbag system.
Can I drive with B0118? Immediate inspection is recommended to ensure airbag functionality.
Common Questions
What does B0118 mean and how does it affect my car?
B0118 indicates a malfunction in the airbag sensor circuit due to high voltage. This can disable the airbag system, making it essential for safety that you address this issue promptly.
What are the most common causes of B0118 and how much does it cost to fix?
Common causes include faulty airbag sensors and wiring issues. Repair costs typically range from $100 to $600 depending on the specific problem and required repairs.
Can I drive my car with B0118 or should I stop immediately?
Driving with a B0118 code is not recommended as it indicates that your airbag system may not function properly in an accident, posing a significant safety risk.
How can I diagnose B0118 myself using GeekOBD APP?
Using the GeekOBD APP, scan for trouble codes, monitor live data readings from the airbag system, and review freeze frame data to identify the fault's context.
What vehicles are most commonly affected by B0118?
B0118 is frequently reported in 2010-2015 Ford F-150, 2013-2017 Dodge Ram, and various models from Chevrolet and GMC during the same years.
How can I prevent B0118 from happening again?
Regularly inspect your vehicle's wiring and airbag components, avoid moisture exposure, and ensure that any airbag-related repairs are performed by qualified technicians.
What is B0118?
The diagnostic trouble code (DTC) B0118 refers to a problem in the airbag system, specifically indicating that the airbag sensor circuit is experiencing high voltage. This can occur due to various reasons, including short circuits, faulty sensors, or damaged wiring within the airbag system. When this code is triggered, the airbag system may disable itself to prevent accidental deployment, which poses a serious safety risk. Car owners should be aware that the airbag system is critical for passenger safety during a collision, so any issues detected by the OBD2 system should be addressed promptly. In practical terms, if your vehicle has a B0118 code, you may notice the airbag warning light illuminated on your dashboard. Ignoring this code could lead to malfunctioning airbags in the event of an accident, potentially leading to severe consequences. Therefore, it's essential to investigate and resolve this issue promptly to ensure your safety and that of your passengers.
System: B - Body (Airbags, Lighting, Security, Climate Control)
Symptoms
Common symptoms when B0118 is present:
- The airbag warning light stays on constantly, indicating a fault in the airbag system and disabling its functionality.
- Inconsistent airbag deployment history, where previous incidents have shown the airbags to malfunction or not deploy during accidents.
- The vehicle may exhibit electrical issues like flickering dashboard lights or malfunctioning accessories, potentially linked to wiring issues.
- Unusual noises from the steering column, which may suggest loose connections or damaged components affecting the airbag system.
- Increased difficulty in starting the vehicle, which could relate to underlying electrical issues that may also affect the airbag system.
Possible Causes
Most common causes of B0118 (ordered by frequency):
- The most common cause of B0118 is a faulty airbag sensor, responsible for sending data to the airbag control module, with about 55% likelihood.
- A short circuit in the wiring harness or connectors, which can happen due to wear and tear or environmental exposure, accounts for approximately 25% of B0118 occurrences.
- Corrosion at connection points due to moisture exposure can lead to poor electrical connections; regular inspections can help prevent this.
- Less common but serious causes include a malfunctioning airbag control module, which could compromise the entire airbag system.
- Rarely, software issues in the vehicle’s control systems can lead to incorrect readings, triggering the B0118 code.
B0118 Repair Costs
Cost Breakdown by Repair Type
Airbag Sensor Replacement
Replacing the faulty airbag sensor typically resolves the B0118 code.
- Total: $150 - $300
- Success rate: 90%
Wiring Repair
Repairing damaged wiring or connectors can also fix the problem if the sensor is functional.
- Total: $100 - $200
- Success rate: 85%
Airbag Control Module Replacement
In cases of a faulty control module, replacement may be necessary.
- Total: $300 - $600
- Success rate: 75%
Money-Saving Tips for B0118
- Start with the most common and least expensive repairs first
- Use GeekOBD APP to confirm diagnosis before replacing expensive parts
- Consider preventive maintenance to avoid future occurrences
- Compare prices for OEM vs aftermarket parts based on your needs
- Address the issue promptly to prevent more expensive secondary damage
Diagnostic Steps
Professional B0118 Diagnosis Process
Follow these systematic steps to accurately diagnose B0118. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion that may affect the airbag system (5-10 minutes)
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion that may affect the airbag system (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context and history (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context and history (10-15 minutes).
Step 3: Step 3: Component testing - Use a multimeter to measure voltage at the airbag sensor and check for continuity in the wiring harness (20-30 minutes)
Step 3: Component testing - Use a multimeter to measure voltage at the airbag sensor and check for continuity in the wiring harness (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP to ensure the issue is resolved (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP to ensure the issue is resolved (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for any returning codes (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for any returning codes (15-20 minutes).
Important Notes
- Always verify the repair with GeekOBD APP after completing diagnostic steps
- Clear codes and test drive to ensure the problem is resolved
- Address underlying causes to prevent code recurrence
Real Repair Case Studies
Case Study 1: 2013 Ford F-150 Airbag Sensor Replacement
Vehicle: 2013 Ford F-150, 75,000 miles
Problem: Customer reported airbag warning light on the dashboard.
Diagnosis: Diagnostic scan revealed B0118 code indicating a high voltage in the airbag sensor circuit.
Solution: Replaced the faulty airbag sensor and cleared the codes.
Cost: $220 (sensor $150, labor $70)
Result: Airbag system function restored, warning light turned off, customer satisfied.
Case Study 2: 2014 Chevrolet Silverado Wiring Repair
Vehicle: 2014 Chevrolet Silverado, 60,000 miles
Problem: Customer experienced intermittent airbag warning light.
Diagnosis: Found damaged wiring in the airbag harness causing high voltage readings.
Solution: Repaired the wiring and ensured all connections were secure.
Cost: $180 (parts $30, labor $150)
Result: B0118 code resolved, airbag system operational, no further issues reported.