Left Front Seat Belt Pre-tensioner Circuit Open
The left front seat belt pre-tensioner circuit has an open condition.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The car's computer detects that the left front seat belt's locking mechanism isn't working properly, which could prevent it from tightening properly in a crash.
What the computer is actually seeing
The computer looks for a resistance value in the pre-tensioner circuit. If it senses no resistance (meaning the circuit is open), it triggers the fault code.
What a healthy reading looks like
Resistance should be between 2-5 ohms; anything beyond this could indicate an open circuit or a fault within the pre-tensioner itself.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Inspect the wiring and connectors for the left front seat belt pre-tensioner for signs of damage, corrosion, or disconnection. Decision point: If damaged, repair or replace as needed. If all looks good, proceed to step 2.
- 2Using a multimeter, check the resistance across the pre-tensioner connector. Expect a reading between 2-5 ohms. Decision point: If not within specs, replace the pre-tensioner. If within specs, proceed to step 3.
- 3Check for a fault in the vehicle's SRS module using a scan tool. Clear faults and road test the vehicle. Decision point: If code reappears, suspect a faulty SRS module; if not, the issue may have been intermittent.
Common causes
- Damaged wiring or connectors in the seat belt system
- Faulty seat belt pre-tensioner
- Loose or corroded connectors at the seat or central SRS unit
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
No, it's not safe to drive as the seat belt pre-tensioner may not function properly in a crash.
Will this code come back after clearing?
Yes, if there’s an underlying issue with the pre-tensioner or wiring, it will likely return after clearing.
Why does this code pair with others?
Codes for different seat belt or airbag system components often show up together due to shared wiring or system fault conditions.
Working a real vehicle right now?
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