b1379 ignition 3 fault

B1379 Ignition 3 Fault

OBD2 Code: B1379

Description: Ignition 3 Circuit Failure

Definition: This code indicates a problem with the ignition circuit, specifically the third ignition circuit. It may involve issues such as wiring problems, faulty ignition switch, or related components that affect the vehicle’s ability to start or run properly.

b1379 ignition 3 fault
P0351 – Ignition Coil A Primary/Secondary Circuit Malfunction – Severe
P0352 – Ignition Coil B Primary/Secondary Circuit Malfunction – Severe
P0353 – Ignition Coil C Primary/Secondary Circuit Malfunction – Severe

Common Causes

B1379 – Ignition 3 Fault

• Common Causes:
  • Faulty ignition coil
  • Defective ignition control module
  • Poor electrical connection in the ignition system
  • Blown fuse related to the ignition system

Common Misdiagnosis

OBD2 Code: B1379

Description: Ignition 3 Fault

Common Misdiagnosis: Often misdiagnosed as a faulty ignition switch when the issue may actually be related to wiring problems or a malfunctioning relay.

Common Diagnostic Steps

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OBD2 Code: B1379 – Ignition 3 Fault

Description: This code indicates a fault in the ignition circuit, specifically related to the third ignition switch position.

Common Diagnostic Steps:

• Check for any blown fuses related to the ignition system and replace if necessary.
• Inspect the ignition switch for signs of wear or damage and test its functionality using a multimeter.
• Examine wiring and connectors associated with the ignition circuit for corrosion, loose connections, or damage. Repair or replace as needed.
• Use an OBD-II scanner to clear the code and perform a road test to see if it returns.
• If the problem persists, consider checking related components such as relays or modules that may affect the ignition circuit.
• Consult vehicle-specific repair manuals or technical service bulletins (TSBs) for additional guidance tailored to your make and model.