B1390
B1390: Body Control Module (BCM) Security System Malfunction
📖 What Does B1390 Mean?
Symptoms
- • Alarm sounds
- • doors lock/unlock randomly
- • security light flashes
Common Causes
- • Faulty BCM sensor
- • wiring issue
- • software glitch
- • faulty security module
Possible Solutions
1. Check BCM sensor connections and wiring for damage or corrosion. 2. Update BCM software if necessary. 3. Replace faulty BCM sensor or security module if necessary.
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❓ Common Questions About B1390
Can I drive with code B1390?
You can drive for a short time, but should address code B1390 soon to avoid worsening the problem or failing an emissions test.
How much does it cost to fix B1390?
The estimated repair cost for code B1390 is between $100 and $500. This includes parts and labor for most makes and models.
Is this code easy to fix myself?
This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.
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Other codes that may appear with B1390
B1388: Seat Switch Circuit Malfunction
B1389: Body System Code - Lighting Malfunction
B1391: Audio System Fault
B1392: Airbag System Fault
💡 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