B1604
Lamp Anti-Theft Indicator Circuit Open
B1604 is an OBD-II diagnostic trouble code meaning: Lamp Anti-Theft Indicator Circuit Open. Common causes: broken wire in the indicator circuit, lamp or led failure. Estimated repair cost: $22–89.
Symptoms
- The anti-theft indicator on the dashboard does not light up
- Problems with activating/deactivating the anti-theft system
- False alarms
Causes
- Broken wire in the indicator circuit
- Lamp or LED failure
- Wiring Harness Problems
- Malfunction of the anti-theft system control unit
How to Fix
- Check the integrity of the wiring harness in the indicator circuit
- Check the functionality of the lamp/LED
- Check the condition of contacts and connectors
- Check the serviceability of the anti-theft system control unit
Related codes
FAQ
What does the B1604 code mean?
B1604 is an OBD-II diagnostic trouble code that indicates: Lamp Anti-Theft Indicator Circuit Open
What causes a B1604 error code?
The most common causes of B1604 include: Broken wire in the indicator circuit; Lamp or LED failure; Wiring Harness Problems; Malfunction of the anti-theft system control unit.
How do I fix a B1604 diagnostic trouble code?
To fix B1604: Check the integrity of the wiring harness in the indicator circuit. Check the functionality of the lamp/LED. Check the condition of contacts and connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1604?
Limited driving only, diagnose soon
How much does it cost to fix B1604?
The estimated repair cost for B1604 is $22–89. Actual cost depends on your vehicle, location, and labor rates.
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