Driver Airbag Deployment Loop Resistance High
The system detected high resistance in the driver airbag loop.
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)
Inside the airbag system, there's a loop of wires that connect the airbag to the control module. If there's a break or too much resistance in these wires, the airbag won't deploy when it's supposed to.
What the computer is actually seeing
The airbag control module monitors the resistance in the airbag circuit. If it sees resistance higher than 3 ohms, it sets the code B225C because it thinks there’s an issue with the airbag deployment system.
What a healthy reading looks like
Resistance should be between 2 and 3 ohms in a healthy airbag circuit. Anything above that indicates a problem.
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.
- 11. Inspect the wiring and connectors between the airbag module and the airbag for signs of damage or corrosion. If damaged, repair or replace as necessary. Decision Point: If wiring is good, proceed to step 2.
- 22. Measure the resistance of the airbag circuit with a multimeter at the airbag connector. Resistance should be between 2-3 ohms. Decision Point: If resistance is above 3 ohms, there is an issue in the circuit. If resistance is normal, proceed to step 3.
- 33. Test the airbag module. Use a scan tool to check for other fault codes and perform module diagnostics. Decision Point: If module fails tests, replace the airbag module. If it passes and no other codes are present, retest the loop resistance.
Common causes
- Damaged wiring in the airbag circuit
- Corroded connectors
- Faulty airbag module
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
No, the airbag may not deploy in an accident, which is a safety risk.
Will this code come back after clearing it?
If the underlying issue isn't fixed, it will likely return after clearing.
Why am I also seeing code B0074?
B0074 typically relates to a communication problem in the airbag system, which may be related to the same fault.
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