Dtc B123a Renault -

Has anyone else solved this code? Share your fix below! 👇

1️⃣ Check & clean the yellow connector under the driver’s seat. 2️⃣ Inspect wires for breaks or pinches. 3️⃣ Reset the fault with a diagnostic tool (OBD scanner with SRS support). 4️⃣ If code returns, test pretensioner resistance (2–3 ohms is normal). 5️⃣ Replace pretensioner if out of spec.

Renault [model/year] Code: B123A – Driver’s seat belt pretensioner circuit resistance too high. dtc b123a renault

Always check the connector first before replacing the pretensioner. Very common on Renaults with adjustable seats.

🚗 Megane, Clio, Scenic, Laguna, Captur. Has anyone else solved this code

Quick check: loose yellow plug under the seat again! 🤦‍♂️ Unplug, clean, reconnect, clear code… and it’s gone. Worth checking before buying parts!

#RenaultProblems #AirbagLight #B123A

✅ Loose or corroded connector under the driver’s seat ✅ Damaged wiring (often from seat movement) ✅ Faulty seat belt pretensioner ✅ Airbag/SRS control unit internal error (less common)