B3841
Park Lamp Signal Circuit High
B3841 is an OBD-II diagnostic trouble code meaning: Park Lamp Signal Circuit High. Common causes: short circuit in side lights circuit, faulty side light relay. Estimated repair cost: $22–111.
Symptoms
- Side lights do not turn on
- The side lights stay on constantly, even when the ignition is turned off.
- Flashing side lights
Causes
- Short circuit in side lights circuit
- Faulty side light relay
- Wiring harness damage
- Incorrect operation of the lighting control unit
- Oxidation of contacts
How to Fix
- Check the integrity of the wiring harness
- Check side light relay
- Check the voltage in the circuit using a multimeter
- Inspect contacts for oxidation
- If necessary, replace the lighting control unit
Related codes
Error B3841 by Vehicle Brand
FAQ
What does the B3841 code mean?
B3841 is an OBD-II diagnostic trouble code that indicates: Park Lamp Signal Circuit High
What causes a B3841 error code?
The most common causes of B3841 include: Short circuit in side lights circuit; Faulty side light relay; Wiring harness damage; Incorrect operation of the lighting control unit.
How do I fix a B3841 diagnostic trouble code?
To fix B3841: Check the integrity of the wiring harness. Check side light relay. Check the voltage in the circuit using a multimeter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3841?
Limited driving only, diagnose soon
How much does it cost to fix B3841?
The estimated repair cost for B3841 is $22–111. Actual cost depends on your vehicle, location, and labor rates.
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