B1875
Low Severity (Level 1)Turn Signal / Hazard Switch Signal Circuit Failure
B1875 usually means turn Signal / Hazard Switch Signal Circuit Failure.
Can you still drive with B1875?
✅Safe to drive — this is an informational or minor issue. Schedule diagnosis at your convenience.
Typical repair cost: $10 – $200
Severity Level 1 — Low
This code indicates a minor issue that is unlikely to cause immediate driveability problems. You can typically continue driving but should have the vehicle inspected at your earliest convenience.
Common Symptoms
- Turn signals not functioning as expected
- Warning light or message on dashboard related to the turn signal/hazard system
- Diagnostic trouble code (DTC) stored in module memory
- Fault may be intermittent — code may clear itself and reappear
- Reduced vehicle functionality related to the turn signal/hazard system
Possible Causes
- Failed turn signal flasher — internal fault from age, heat cycling, and vibration
- Damaged wiring or corroded connector in the turn signal/hazard system circuit
- Blown fuse for the turn signal/hazard system circuit — check before replacing components
- Faulty control module driving the turn signal flasher
- Loose or corroded ground point shared by the turn signal/hazard system
Common Fixes
- Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($37-116 at shop, free at auto parts store for basic scan)
- Visually inspect the turn signal/hazard system wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $92 diagnostic fee at shop)
- Replace turn signal flasher if testing confirms it has failed — use OEM quality, avoid the cheapest no-name aftermarket parts that fail in a year ($10-200)
- Check and replace any blown fuses in the turn signal/hazard system fuse circuit — if fuse blows again, there's still a short that needs to be found ($3-17 for fuses)
- Perform a wiggle test on the turn signal/hazard system wiring harness while monitoring live data — see if the fault returns when you move the harness at different points ($0-101 diagnostic labor)
Estimated Repair Cost
These are estimated costs based on generic repair data. Actual costs may vary depending on your vehicle, location, and labor rates.
Frequently Asked Questions
What does B1875 mean?
B1875 stands for "Turn Signal / Hazard Switch Signal Circuit Failure". B1875 usually means turn Signal / Hazard Switch Signal Circuit Failure.
Can you drive with B1875?
Safe to drive — this is an informational or minor issue. Schedule diagnosis at your convenience.
How much does it cost to fix B1875?
Repair costs for B1875 typically range from $10 to $200, depending on your vehicle make, model, and local labor rates. Common fixes include: Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($37-116 at shop, free at auto parts store for basic scan); Visually inspect the turn signal/hazard system wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $92 diagnostic fee at shop); Replace turn signal flasher if testing confirms it has failed — use OEM quality, avoid the cheapest no-name aftermarket parts that fail in a year ($10-200).
Will B1875 clear itself?
Explore Repair Costs
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