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B1416
System
Supplemental Restraint (Airbag)
Scanner required
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Passenger Seat Belt Pretensioner Circuit

Understand B1416, common causes, and the right TOPDON scanner to diagnose it.

Passenger pretensioner circuit malfunction.

Common symptoms

  • SRS warning lamp

Typical causes

  • Passenger pretensioner under seat
  • Harness damage
  • Connector not locked

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

What does B1416 mean?
B1416 indicates passenger seat belt pretensioner circuit. Passenger pretensioner circuit malfunction.
Can I diagnose B1416 with a basic code reader?
B1416 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Which TOPDON scanner do I need for B1416?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with B1416?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.