Always check the connector first before replacing the pretensioner. Very common on Renaults with adjustable seats.
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. dtc b123a renault
Renault [model/year] Code: B123A – Driver’s seat belt pretensioner circuit resistance too high. Always check the connector first before replacing the
🚗⚠️ Got a on my Renault – driver seatbelt pretensioner resistance too high. 2️⃣ Inspect wires for breaks or pinches
⚠️ Always disconnect the battery for 15+ minutes before touching any SRS component!
Quick check: loose yellow plug under the seat again! 🤦♂️ Unplug, clean, reconnect, clear code… and it’s gone. Worth checking before buying parts!