B1605
B1605: Body Control Module (BCM) Lighting Circuit Malfunction
📖 What Does B1605 Mean?
Symptoms
- • Malfunctioning exterior lights
- • flickering lights
- • or lights that do not turn off when the ignition is turned off
Common Causes
- • Faulty BCM
- • wiring issues
- • blown fuse
- • or a malfunctioning lighting component
Possible Solutions
1. Check the BCM for any fault codes and clear them. 2. Inspect the wiring and connectors for any damage or corrosion. 3. Replace the BCM if it is faulty. 4. Check the fuses and replace any blown ones. 5. Replace any malfunctioning lighting components.
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❓ Common Questions About B1605
Can I drive with code B1605?
You can drive for a short time, but should address code B1605 soon to avoid worsening the problem or failing an emissions test.
How much does it cost to fix B1605?
The estimated repair cost for code B1605 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
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Other codes that may appear with B1605
B1603: Power Window Circuit Malfunction
B1604: Seat Switch Circuit Malfunction
B1606: Immobilizer System Malfunction
B1607: Audio System 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