B1450
System
Supplemental Restraint (Airbag)
Scanner required
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Driver Frontal Airbag Deployment Loop 2 Resistance High

Understand B1450, common causes, and the right TOPDON scanner to diagnose it.

High resistance in driver airbag deployment loop — clock spring common culprit.

Common symptoms

  • Airbag warning
  • Horn or cruise inop

Typical causes

  • Clock spring high resistance
  • Connector corrosion under steering wheel
  • Airbag module internal fault

What scanner do you need?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

Use live data and freeze frame to confirm the fault before replacing parts. ABS, SRS, and network U-codes usually require a full-system scanner.

Diagnostic tips

  • Record freeze frame data when the code first sets
  • Clear the code only after fixing the root cause
  • Check for related pending codes that point to a common issue
  • Verify battery voltage is above 12.4V before chasing sensor codes

Recommended TOPDON scanners

Frequently asked questions

Can I diagnose B1450 with a basic code reader?
B1450 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Is it safe to drive with B1450?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.