B0021 OBD-II: Left Curtain Deployment Control 1 (Subfault)

B0021 Severity

Moderate

Will B0021 go away on its own?

Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.

For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.

Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.

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OBD II Fault Code

OBD II B0021

OBD-II Code Diagnostic Trouble Code is defined as a Left Curtain Deployment Control 1 (Subfault)

OBD Code Resources

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B0021 OBD-II: Left Curtain Deployment Control 1 (Subfault)

Will B0021 go away on its own?

Need a B0021 diagnosis? Trust our experts.

OBD II Fault Code

OBD Code Resources

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OBD II Fault Code