Rear Curtain Airbag Deployment Circuit
2011-2011 Mitsubishi Lancer 2.0L I4
The 2011 Mitsubishi Lancer is equipped with a 2.0L inline-4 engine. Below you'll find detailed b0027 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the rear window curtain airbag deployment circuit. Some vehicles have a rear curtain airbag for rollover protection.
Symptoms
- Airbag warning light on
- SRS fault stored
- Rear curtain airbag inoperative
Common Causes
- Faulty rear curtain airbag
- Wiring damage in D-pillar or headliner
- Control module fault
- Previous rear collision damage
Diagnostic Steps
- Scan SRS codes
- Inspect D-pillar and headliner wiring
- Check rear curtain airbag connector
- Verify no prior collision damage
Repair Notes
Professional service required. Replace rear curtain airbag module or repair wiring.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
B0027 on Other Vehicles
Mitsubishi Colt JP
2008-2008 1.3L I4 4A90
Mitsubishi Colt JP
2008-2008 1.5L I4 4A91
Mitsubishi Colt JP
2009-2009 1.3L I4 4A90
Mitsubishi Colt JP
2009-2009 1.5L I4 4A91
Mitsubishi Colt JP
2010-2010 1.3L I4 4A90
Mitsubishi Colt JP
2010-2010 1.5L I4 4A91
Mitsubishi Colt JP
2011-2011 1.3L I4 4A90
Mitsubishi Colt JP
2011-2011 1.5L I4 4A91
Common Questions
What does code B0027 mean on a 2011-2011 Mitsubishi Lancer?
B0027 stands for "Rear Curtain Airbag Deployment Circuit". Malfunction in the rear window curtain airbag deployment circuit. Some vehicles have a rear curtain airbag for rollover protection.
What are the symptoms of B0027 on a Mitsubishi Lancer?
Common symptoms of B0027 include: Airbag warning light on, SRS fault stored, Rear curtain airbag inoperative.
What causes B0027 on a 2011-2011 Mitsubishi Lancer?
Common causes of B0027 include: Faulty rear curtain airbag, Wiring damage in D-pillar or headliner, Control module fault, Previous rear collision damage.
Last updated: March 2026