B1691
Autolamp Delay Circuit Short To Battery
B1691 is an OBD-II diagnostic trouble code meaning: Autolamp Delay Circuit Short To Battery. Common causes: damage to the wiring in the auto lamp delay circuit, short circuit to battery positive. Estimated repair cost: $33–111.
Symptoms
- Auto lamps do not work
- Headlights do not turn on automatically
- Flashing or unstable headlights
- The malfunction indicator on the instrument panel lights up
Causes
- Damage to the wiring in the auto lamp delay circuit
- Short circuit to battery positive
- Auto lamp delay relay malfunction
- Problems with the lighting control unit
- Contact corrosion in circuit connectors
How to Fix
- Conduct a visual inspection of the wiring for damage.
- Check the integrity of the auto lamp delay circuit with a multimeter
- Check the operation of the auto lamp delay relay
- Inspect connectors and contacts for corrosion
- Replace damaged wires or components as necessary
- Reset the error and check the system operation
Related codes
FAQ
What does the B1691 code mean?
B1691 is an OBD-II diagnostic trouble code that indicates: Autolamp Delay Circuit Short To Battery
What causes a B1691 error code?
The most common causes of B1691 include: Damage to the wiring in the auto lamp delay circuit; Short circuit to battery positive; Auto lamp delay relay malfunction; Problems with the lighting control unit.
How do I fix a B1691 diagnostic trouble code?
To fix B1691: Conduct a visual inspection of the wiring for damage.. Check the integrity of the auto lamp delay circuit with a multimeter. Check the operation of the auto lamp delay relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1691?
Limited driving only, diagnose soon
How much does it cost to fix B1691?
The estimated repair cost for B1691 is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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