Front Impact Severity Sensor Circuit
2014-2014 Lincoln MKX 3.7L V6
The 2014 Lincoln MKX is equipped with a 3.7L V6 engine. Below you'll find detailed b0039 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the frontal impact severity sensor used to determine airbag deployment force level.
Symptoms
- Airbag warning light on
- SRS fault stored
- Dual-stage airbag staging may be incorrect
Common Causes
- Faulty severity sensor
- Wiring damage
- Control module fault
- Sensor mounting compromised
Diagnostic Steps
- Scan SRS codes
- Inspect severity sensor
- Check wiring to ACM
- Measure sensor circuit
- Verify sensor mounting
Repair Notes
Replace impact severity sensor. Ensure correct deployment staging by verifying ACM calibration.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0005Driver Knee Airbag Deployment Circuit
B0039 on Other Vehicles
Lincoln Aviator
2003-2003 4.6L V8 DOHC
Lincoln Aviator
2004-2004 4.6L V8 DOHC
Lincoln Aviator
2005-2005 4.6L V8 DOHC
Lincoln Aviator
2020-2020 3.0L Twin-Turbo V6
Lincoln Aviator
2020-2020 3.0L V6 Twin Turbo
Lincoln Aviator
2020-2020 3.0L V6 Twin Turbo Hybrid
Lincoln Aviator
2021-2021 3.0L Twin-Turbo V6
Lincoln Aviator
2021-2021 3.0L V6 Twin Turbo
Common Questions
What does code B0039 mean on a 2014-2014 Lincoln MKX?
B0039 stands for "Front Impact Severity Sensor Circuit". Malfunction in the frontal impact severity sensor used to determine airbag deployment force level.
What are the symptoms of B0039 on a Lincoln MKX?
Common symptoms of B0039 include: Airbag warning light on, SRS fault stored, Dual-stage airbag staging may be incorrect.
What causes B0039 on a 2014-2014 Lincoln MKX?
Common causes of B0039 include: Faulty severity sensor, Wiring damage, Control module fault, Sensor mounting compromised.
Last updated: March 2026