📖 What Does B0402 Mean?
Symptoms
- • Doors lock/unlock randomly
- • fail to lock/unlock
- • or make unusual noises
Common Causes
- • Faulty door lock actuator
- • wiring issue
- • door lock switch malfunction
- • or body control module failure
Possible Solutions
1. Check door lock actuator for proper operation and replace if faulty. 2. Inspect wiring for damage or corrosion and repair/replace as needed. 3. Test door lock switch and replace if faulty. 4. Update body control module software or replace if faulty.
❓ Common Questions About B0402
Can I drive with code B0402?
You can drive for a short time, but should address code B0402 soon to avoid worsening the problem or failing an emissions test.
How much does it cost to fix code B0402?
The estimated repair cost for code B0402 is between $100 and $300. This includes parts and labor. Prices may vary based on your vehicle's make and model.
Is code B0402 easy to fix myself?
This repair is considered moderate. It may require specialized tools or significant disassembly. If you are not an experienced mechanic, professional help is recommended.
Required Parts
Tools
Need a Pro?
Complex codes like B0402 can be tricky. Don't risk it if you're unsure.
Quick Stats
Related Diagnostic Codes
Other codes that may appear with B0402
B0400: Airbag System Fault
B0401: Climate Control Temperature Sensor Malfunction
B0403: Power Window Circuit Malfunction
B0404: Seat Switch Circuit Malfunction
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system