B1166
B1166: Body Control Module (BCM) Security System Malfunction
📖 What Does B1166 Mean?
Symptoms
- • Keyless entry system failure
- • alarm system malfunction
- • or immobilizer system failure
Common Causes
- • Faulty BCM sensor
- • wiring issue between BCM and sensor
- • software glitch
- • or faulty immobilizer system
Possible Solutions
Check BCM sensor connections and wiring for damage or corrosion Clear any stored trouble codes and perform a system reset Update BCM software if necessary Replace faulty BCM sensor or immobilizer system if necessary
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❓ Common Questions About B1166
Can I drive with code B1166?
You can drive for a short time, but should address code B1166 soon to avoid worsening the problem or failing an emissions test.
How much does it cost to fix B1166?
The estimated repair cost for code B1166 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.
Required Parts
Recommended Tools
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View Best Sellers ↗Related Diagnostic Codes
Other codes that may appear with B1166
B1164: Seat Position Sensor Circuit Malfunction
B1165: Body Control Module (BCM) Lighting Circuit Malfunction
B1167: Audio System Malfunction
B1168: Airbag System 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