B0058 Code – Passenger Frontal Deployment Loop Resistance High
The B0058 Diagnostic Trouble Code (DTC) indicates that the Airbag Control Module (ACM/SDM/RCM) has detected higher than expected resistance in the passenger frontal airbag deployment circuit. Excessive circuit resistance can prevent the passenger airbag from deploying correctly during a collision.
Note: Wire colors, connector pin numbers, circuit layout, and resistance values vary between vehicle manufacturers.
Always compare measurements with the factory service manual.
Symptoms
- Airbag (SRS) warning lamp ON.
- Passenger Airbag OFF message.
- SRS warning stored in memory.
- Passenger frontal airbag disabled.
Possible Causes
- Loose airbag connector.
- Corroded connector terminals.
- Damaged wiring harness.
- High resistance inside passenger airbag inflator.
- Poor ground connection.
- Faulty Airbag Control Module.
Diagnostic Steps
- Read all stored SRS codes.
- Inspect passenger airbag connectors.
- Check wiring for cuts or corrosion.
- Measure circuit resistance according to manufacturer specifications.
- Repair damaged wiring if necessary.
- Clear the DTC and verify the repair.
Responsive Signal Flow Diagram
Battery
→
Airbag Control Module
→
Passenger Airbag Circuit
→
Passenger Frontal Airbag
Typical Wiring Layout
+12V
│
▼
┌──────────────────┐
│ Airbag Control │
│ Module (ACM) │
└───────┬──────────┘
│ Wire A
│
▼
┌──────────────────┐
│ Passenger Airbag │
│ Connector │
└───────┬──────────┘
│ Wire B
▼
┌──────────────────┐
│ Passenger Airbag │
│ Inflator Module │
└──────────────────┘
Recommended Repairs
- Reconnect loose connectors.
- Clean corroded terminals.
- Repair damaged wiring.
- Replace the passenger airbag if internal resistance is out of specification.
- Replace the SRS module only after confirming all other components.
Can You Drive With B0058?
Yes, the vehicle may still operate normally, but the passenger frontal airbag may not deploy properly during an accident. Repair should be performed as soon as possible.
Related DTCs
- B0056 – Passenger Airbag Suppressed
- B0057 – Passenger Deployment Loop Circuit Fault
- B0059 – Passenger Deployment Loop Resistance Low
- B0019 – Passenger Frontal Deployment Loop Stage 1
- B0081 – Passenger Presence System Fault
FAQ
What does high resistance mean?
It means the circuit resistance exceeds the value expected by the airbag control module.
Can a loose connector trigger B0058?
Yes. Loose or corroded connectors are among the most common causes.
Can I simply erase the code?
No. The fault must be repaired before the code can be permanently cleared.